"Chalobah trained today," explained Rosenior, at his press conference to preview a key game in the chase for UEFA Champions League spots.
"Not quite fully, it was modified training. We will make a decision on him but he's very, very close. Reece is a little bit further away.
"Levi will play some minutes for the Under-21s tomorrow [Friday]. He's an outstanding player and a leader in the dressing room.
"When you have a long-term injury, to the extent of Levi's injury, you need a long rehab period. I want to make sure he is 100 per cent right in terms of his match fitness, before we consider him for our first team.
"I don't ever tell you the starting XI. Enzo has been training and he's been training very well. He's been back with the group this week and has been fantastic. It's business as usual, in terms of selection for the game."