Coyle is among the rumoured list of celebs taking part in Channel 5's latest series and host Dowling said that he'd already got a great Cheryl Cole prank planned in his head for the Irish singer.
"They should do a task where they say, 'You have to Fight For This Love Nadine'. Then they dress her up as Cheryl and make her sing the song," he told Digital Spy. "Come on! That would be amazing!
"And then play, [Nadine's single] 'Insatiable'. 'What song's that? What's that song?' I think on Channel 5 that is what they would do with her."
Dowling also backed Janice Dickinson to enter the house, commenting: "Apparently it's about money. Richard pay her more money, Richard Desmond come on! She would be phenomenal."
The next series of Celebrity Big Brother will air at the end of the summer on Channel 5.