GK Kieren Westwood, a couple of seasons ago he was one of the best in the league, think he's had an injury this season, only 33 and probably wouldn't cost a lot, accomplished and experienced, could give good back up for Neil in goals.
Fernando Forestieri - 28 this year but has bags of experience and when fit he's a class player, could thrive with Warnocks man management, wouldn't cost too much either.
Lucas Joao, strange one, he's dipped in and out of the squad, loaned out to Blackburn in 2017 but has looked lively and sharp on the wing when I've seen him play, again another under Warnock that could do well, he has bags of pace on him and likes running at defenders.