Double on Farah's mind
Farah thrilled a home crowd at the London Games when he became only the seventh man to complete the 5,000-10,000M Olympic double.
Salazar told BCC Sport that Farah, who will be 33 in four years' time, could have lost a “little speed” over the 5,000 by then.
“My guess is he will do a 10-marathon double,” Salazar said.
“At Rio, that would be a good shot. We will have a look at the schedule but if the 10 is first, he would go 10,000 and marathon.”