Yarran told the Sunday Herald Sun last week that while he is still overweight he believes he return to AFL football.
The former Carlton running defender has told the club he will return to training in an attempt to shed weight after several months of training away from Punt Road.
Richmond is hopeful rather than confident he can regain his training intensity and put together a full season of fitness work.
A payout is still a realistic prospect should Yarran fail to meet fitness requirements but if he can stay free of calf complaints he could find a way to make an improbable comeback to AFL football.
Source: Jon Ralph, Herald-Sun