Don't agree, he was giving him minutes off the bench right from the very start of the season - he hadn't done that with Spence before, he had shipped him out as soon as he could previously, so there was a clear change in thinking from that pre season. Then he got injured. Ange literally said it there, he had to mature - I doubt he would be saying that publicly without DJed acknowledging that was the case. Neil Warnock said he would be 'Premier League or non League', he got his loan from Leeds cancelled early, previous to joining Spurs there was talk about him having a questionable attitude etc
There are things that unfortunately you and I don't see which means just because a manager doesn't pick a player doesn't mean he doesn't rate him as a footballer. Attitude is a massive aspect at this level. Whatever it was, he's applying himself right now that's for sure - could even be in part down to the manager, heaven forbid.....