The midfielder starts for the Sky Blues for the first time since his summer arrival from Burton Albion, tonight against MK Dons.
Allen has missed the majority of this season through injury, making his debut for the club off the bench against Sunderland just over a week ago.
Also, there is a return to the matchday squad for winger Jodi Jones, who is involed in a first team game for the first time in over a year.
Elsewhere, Ben Wilson returns between sticks and he has a back four of Tennai Watson, Morgan Williams, Declan Drysdale and Brandon Mason in front of him.
Josh Eccles starts alongside Allen and this past weekend's last scoring hero, Callum O'Hare.
Up top, Jordy Hiwula and Gervane Kastaneer will look to provide for Amadou Bakayoko who leads the line for the Sky Blues.
Sky Blues Xl: Ben Wilson (GK), Tennai Watson, Morgan Williams (C), Declan Drysdale, Brandon Mason, Josh Eccles, Jamie Allen, Callum O'Hare, Jordy Hiwula, Gervane Kastaneer, Amadou Bakayoko.
Subs: Marko Marosi (GK), Joe Newton, Jordan Shipley, Jodi Jones, Zain Westbrooke, Will Bapaga, Max Biamou.