He's a shitty human being, but nobody should be questioned for not carrying on with an injury like that in hindsight. Even beforehand, you should always give a guy the benefit of the doubt when he's given it a proper try and doesn't have a track record of it or anything.

He isn't a big puncher and Canelo isn't remotely vulnerable, it doesn't really matter who his trainer was or what he might have tried given another round.

Whether he should fight on that all depends on the extent of the injury and what level he wants to be at I guess. A rematch with Eubank jr probably would be about as lucrative as anything he could aim for.