It's worth noting with Tim, that he's 21 and coming off an injury.
I had a look at his numbers and they are quite striking. He is not only in the top1% of midfielders for things like tackles and ball recoveries (in fact he is better than the the person generally the best-Ugarte) but he is also exceptional at ball carrying, like top 5% of the league or whatever.
The flip of this is he is woeful at passing He make's bottom 1% of passes, and his short and medium passing percentage is like bottom 20%.
Now don't get me wrong, some of this is down to him mainly coming on in games, under Dyche where we are defending a lead, so you'd imagine the numbers revert a little bit. However he is basically very good at dribbling, excellent at winning the ball back and bad at passing.
He still has room to improve at 21 and I still think he can be a useful player for us, but some good coaching would help him. I would still play him a bit further forward.