Actually, this is a lot more complicated, but how much of that complication surfaces depends (of course) on how much M'Villa and Ruban Kazan want to push it.
Remember the Bosman case? One of the main legal rights at the base of that judgement is the right of EU individuals to work; that includes not just the immediate right but also relates to actions that impair future work capabilities and opportunities.
So let's take a possible circumstance. RK tell JM-V that he is under contract and may not interact with SAFC (or any other football club). JM-V than asks to train with the full squad and be considered for team selection. RK say no, we don't want you in the main squad. J-MV then asks how he can train, but as he isn't playing he probably can't get a visa. RK say just sit down and we keep paying. At this point RK hold the contract and player registration but are acting in a way that adversely affects JM-V's right to work now and, due to lack of fitness and playing opportunity, damage his future career and earnings.
So IF JM-V wanted to risk the remaining payments he is due, he could challenge the contract (ask for it to be terminated) and
Unless RK can argue that JM-V has broken his contract before this in some way, then they may find it hard to impose "unreasonable" limitations on JM-V's actions. And of course it also depends on legal opinions about the transfer fee demanded i.e. is that also unreasonable.
- demand that UEFA end his registration with RK. He could of course still sue RK for the contract value.
- OR leave the contract but ask UEFA for permission to train with a team to maintain his right to work etc.
There are a lot of other possible circumstances that we don't know about, but the situation is not clear cut based only on the existing contract and player registration.
To be honest mate, I don't care about 'possible' circumstances, or what might happen if you sit and over think this whole thing.
I was just stating that if he goes AWOL, under contract, chances are he'll land himself in hot water, that's what usually happens.
You've just made a tale of assumptions and stuff up that are completely unfounded.
My head hurts.

