Muamba has made remarkable progress since suffering a cardiac arrest against Tottenham last month, and was released from hospital this week.
Coyle said: “I understand, because of the interest, that everybody thinks he’s released from hospital so that’s it – he’s singing and dancing down the street, but people have got to understand there’s room for continued improvement. But knowing Fabrice and how much of a battler he is, it wouldn’t surprise me if he comes back. But I’ve got to stress he still needs that time with his family unit.
“His little lad hadn’t been able to see him for a period so it’s important we give them that time to be together. God willing, if he ever comes back to play at the level he’s played before then, of course, that will be a huge boost to everybody.”