The truth is that he has already had a good deal of time. We heard the same argument about Shinji last year. Now some people love him cus he smiles a lot, but has he improved at all towards the end of his second season? I would say he is the same player he was last year.
I remember when we used to recruit from the lower leagues? Take O'Neill's team. Elliott from Oxford, Lennon & Savage from Crewe, Guppy from Port Vale, Claridge from Birmingham etc. They went straight into a premier league team without having to have years of time to adapt. It's called doing your homework.
We have managed to spend 60mn on three players that haven't improved the team. I don't think we can afford to have that much money sitting on the bench whilst we wait and hope that the ugly ducklings become swans. That money needs to be recouped as much as possible and reinvested in players that will improve the team and fit our style.