Holloway has seen the young Irishman star in his side's run of four straight wins and he thinks he would be vital to keep for their remarkable push for the Premier League.
Coleman's loan ends a week today but Holloway said: "I will have to have a word with David (Moyes) about the young boy. His team is doing very well and hopefully he will leave us with us for first-team experience.
"It is doing him the world of good. He must have wondered what he had let himself in for when we were two down in our first game, but now he knows how good we are."