I feel he has become lazy than what he was used to. He used to be so good and so much talent but don't seem much in him now. Turkish league seems like a decent league and hopefully he can develop and still make his way back again into a good team and proper game time.
It was pretty clear to see that Dele was really struggling, it seemed like he had lost his zeal to play football, there was minimal effort from his to try and work hard so he could perform better, thus it was obvious that his career was slowly going down; Spurs tried to cope with him and maybe give him time to start playing much better, but it wasn't working, next was at Everton, he was ineffective for all of his time at Everton, and it was pretty obvious that sooner rather than later he will be shipped out. Having said that, now that he has left the EPL and its spotlight, Dele has a lot of work to do, he should concentrate on his game and try to bring out the best in himself, that is the only way to return to the previous level he attained.