I think his ability to thread a pass final third was very good. Though it didn't always happen for him further forward. Last season very briefly as one of two 8's he was ineffective- mind you that was with Samed behind him and Jobe. Early the season before under Mowbray he was tidy enough in the 8 role on the right knitting play and probing up the pitch but not really threatening with Jobe the other 8 on the left, but it was abandoned after two or three games.
I watched something a bit back that Mowbray was on - might have been Allardyce's podcast. As usual he was very open with his comments. He was asked about Wharton and he was glowing about him. Said something like by his own admission he wasn't quick and couldn't get past anyone (or something to that effect) but waxed lyrically about his ability on the ball and spoke about him as a kid getting around the first team at Blackburn.
Then he was asked about Neil - it almost seemed like he didn't want to really talk about him. Said something about him wanting to just sit in front of the back four and knock the ball about. Maybe I've forgot some of what he said, but It quite suprised me - maybe it wasn't all the clubs doing.