West Bromwich Albion midfielder Claudio Yacob is a possibility for the weekend derby against Aston Villa as he nears a return following six weeks out injured. Keen said: "Claudio is a really key player and, let's be honest, we've missed him. He's got a really big role in the team and earlier in the season, we saw how important it was.
"He has had a little bit of a setback which slowed down his recovery and we've taken it slowly this time to ensure he is okay.
"We're hopeful he will be back, if not for this weekend, then the weekend after."
