Bissouma at Brighton if we are sticking to English football.
I think it'll be interesting if anyone catches your eye. Samu Saiz cost Leeds £3m when they got him last year. Amazing price based on everything I've seen of him so far. He'd get into most Premier League clubs from about 8th and lower. Got to be something wrong if he hasn't attracted any interest so far at his age.
Special mention needs to go to SausageVince as well regarding McGinn. It'll be interesting to see how he works out in the Championship