Watt and Wright back in the fold.
Both played in the recent 0-0 draw for the U's U21s in the game at Sheffield United last week, and they'll be hoping to play some part against the Posh at the weekend.
Craig Eastmond came through his own comeback from injury against Doncaster Rovers with no ill effects last week and is also included for the match at the Weston Homes Community Stadium.
The match comes too soon for Drey Wright and Josh Thompson, who were due to play in the postponed game in the U21s this week, but otherwise the U's are looking in good shape for the visit of Darren Ferguson's men.
U's: Walker, Lewington, Clohessy, Eastman, Okuonghae, Gordon, Kent, Eastmond, Gilbey, Moncur, Bean, David Wright, Szmodics, Sears, Vose, Watt, Massey, Holman, Ibehre