Yes based on his performance in training and matchdays not his performance in bed.
If you're saying he's so shit in training, Ole's correct to not to play him then surely Ole should receive even more blame for not seeing how shit he was before he approved the signing?
Ole maybe thinking he's in poor in training (of which you have no evidence) and that actually being the case are two different things. Ole's opinion is subjective and he isn't infallible. Again, I don't rate Donny. There were 4 Ajax players I'd much rather we have went for. But I'm baffled you're not baffled at VDB's lack of minutes and are making unverifiable claims to justify it.
It's ridiculous if you believe one can be utter shit in training, then be the second highest rated player in Italy - Netherlands less than a week later. Do you seriously believe a player that's performing worse than Matic in training is capable of outperforming Wijnaldum, Verrati, Spinazola, Van Dijk, etc?
A more likely explanation is, Ole is either testing VDB, to see if he hands in a transfer request, or he actually wants him to do so, because there's no reason why else you wouldn't put on VDB for 25 minutes against Leeds in a won game, instead of a long past it and declining Matic.