<p class="title">Cristiano Ronaldo will spearhead Juventus' old guard as they look to finish the job on Tuesday against Ajax's impressive young guns in a quarterfinal clash between two sides desperate to end years of Champions League heartbreak.</p>.<p class="bodytext">Juventus have the edge on away goals thanks to Ronaldo's 125th Champions League goal in a 1-1 draw in Amsterdam, but Ajax's David Neres ensured the teams will start on a knife-edge in Turin in a repeat of the 1973 and 1996 finals.</p>.<p class="bodytext">Juventus have put their bid to wrap up an eighth consecutive Serie A title on the back burner as they focus on their European ambitions.</p>.<p class="bodytext">Massimiliano Allegri lined out with a young squad against lowly SPAL on Saturday and the champions fell to a 2-1 defeat when a point would have sufficed for another Scudetto.</p>.<p class="bodytext">"The Scudetto will come sooner or later," said Allegri, whose side hold a 17-point lead on second-placed Napoli with six games left.</p>.<p class="bodytext">"If we had put all our starters in, it would have been easier to win it, but there is the goal to obtain on Tuesday."</p>.<p class="bodytext">Juventus have won the Champions League twice, most recently in 1996 when they beat Ajax in the final.</p>.<p class="bodytext">Four-time winners Ajax won their third consecutive title in 1973 at the expense of Juventus, last lifting the trophy in 1995.</p>.<p class="bodytext">Allegri said he was prepared for "a difficult match against a very impressive team". Ronaldo was rested at the weekend along with regulars Leonardo Bonucci, Blaise Matuidi, Alex Sandro, Mario Mandzukic and Miralem Pjanic.</p>.<p class="bodytext">Captain Giorgio Chiellini, however, remains a doubt with the 34-year-old defender recovering from a calf injury.</p>.<p class="bodytext">But Ronaldo remains Juve's key weapon.</p>.<p class="bodytext">The 34-year-old was signed for 100 million euros ($117 million) last summer to help Juventus win a competition they have finished runners-up in a record seven times, most recently in 2015 and 2017.</p>.<p class="bodytext">Ronaldo has played a leading role in all of his five previous European triumphs, including with the tie-clinching, 97th-minute penalty for Real Madrid against Juventus last season in the quarters.</p>.<p class="bodytext">The financial clout of Dutch league leaders Ajax is significantly less than Juventus.</p>.<p class="bodytext">The club, who are captained by 19-year-old defender Matthijs de Ligt, spent a reported club-record 45 million euros last summer on new signings to bolster their Champions League hopes.</p>.<p class="bodytext">Defensive midfielder Daley Blind arrived from Manchester United, and forward Dusan Tadic from Southampton, to provide leadership for a young squad where the average age is 24 years.</p>.<p class="bodytext">Veteran Klaas-Jan Huntelaar, 35, also hit form with a hat-trick in a 6-2 win over Excelsior in the Dutch league at the weekend.</p>.<p class="bodytext">But midfielder Frenkie de Jong, 21, is uncertain to start after going off clutching his hamstring.</p>.<p class="bodytext">While Juve are looking to reach a third semi-final in five seasons, Ajax have not made it to the last four since 1997.</p>.<p class="bodytext">The winners would go through to a semifinal against the winners of the all-English tie between Manchester City and Tottenham Hotspur.</p>
<p class="title">Cristiano Ronaldo will spearhead Juventus' old guard as they look to finish the job on Tuesday against Ajax's impressive young guns in a quarterfinal clash between two sides desperate to end years of Champions League heartbreak.</p>.<p class="bodytext">Juventus have the edge on away goals thanks to Ronaldo's 125th Champions League goal in a 1-1 draw in Amsterdam, but Ajax's David Neres ensured the teams will start on a knife-edge in Turin in a repeat of the 1973 and 1996 finals.</p>.<p class="bodytext">Juventus have put their bid to wrap up an eighth consecutive Serie A title on the back burner as they focus on their European ambitions.</p>.<p class="bodytext">Massimiliano Allegri lined out with a young squad against lowly SPAL on Saturday and the champions fell to a 2-1 defeat when a point would have sufficed for another Scudetto.</p>.<p class="bodytext">"The Scudetto will come sooner or later," said Allegri, whose side hold a 17-point lead on second-placed Napoli with six games left.</p>.<p class="bodytext">"If we had put all our starters in, it would have been easier to win it, but there is the goal to obtain on Tuesday."</p>.<p class="bodytext">Juventus have won the Champions League twice, most recently in 1996 when they beat Ajax in the final.</p>.<p class="bodytext">Four-time winners Ajax won their third consecutive title in 1973 at the expense of Juventus, last lifting the trophy in 1995.</p>.<p class="bodytext">Allegri said he was prepared for "a difficult match against a very impressive team". Ronaldo was rested at the weekend along with regulars Leonardo Bonucci, Blaise Matuidi, Alex Sandro, Mario Mandzukic and Miralem Pjanic.</p>.<p class="bodytext">Captain Giorgio Chiellini, however, remains a doubt with the 34-year-old defender recovering from a calf injury.</p>.<p class="bodytext">But Ronaldo remains Juve's key weapon.</p>.<p class="bodytext">The 34-year-old was signed for 100 million euros ($117 million) last summer to help Juventus win a competition they have finished runners-up in a record seven times, most recently in 2015 and 2017.</p>.<p class="bodytext">Ronaldo has played a leading role in all of his five previous European triumphs, including with the tie-clinching, 97th-minute penalty for Real Madrid against Juventus last season in the quarters.</p>.<p class="bodytext">The financial clout of Dutch league leaders Ajax is significantly less than Juventus.</p>.<p class="bodytext">The club, who are captained by 19-year-old defender Matthijs de Ligt, spent a reported club-record 45 million euros last summer on new signings to bolster their Champions League hopes.</p>.<p class="bodytext">Defensive midfielder Daley Blind arrived from Manchester United, and forward Dusan Tadic from Southampton, to provide leadership for a young squad where the average age is 24 years.</p>.<p class="bodytext">Veteran Klaas-Jan Huntelaar, 35, also hit form with a hat-trick in a 6-2 win over Excelsior in the Dutch league at the weekend.</p>.<p class="bodytext">But midfielder Frenkie de Jong, 21, is uncertain to start after going off clutching his hamstring.</p>.<p class="bodytext">While Juve are looking to reach a third semi-final in five seasons, Ajax have not made it to the last four since 1997.</p>.<p class="bodytext">The winners would go through to a semifinal against the winners of the all-English tie between Manchester City and Tottenham Hotspur.</p>