LeSean McCoy is a really good running back.
Apparently, he's somehow even better at holding grudges.
Back in 2015, during Chip Kelly's ultimate downfall with the Philadelphia Eagles, McCoy was traded to the Buffalo Bills in exchange for standout linebacker Kiko Alonso. Ever since then, LeSean and Kiko have not been the best of buds.
So needless to say, when Kiko Alonso posted this picture on Instagram, McCoy was not a happy camper.