Fullback faces fitness test
U's: Walker, Lewington, Clohessy, Kpekawa, Gordon, Vincent-Young, Eastman, Harney, Gorkss, Eastmond, Fox, Lawrence, Moncur, Lapslie, Massey, Szmodics, Sembie-Ferris, Watt, Hewitt, Bonne, Sears.
Youngsters Tom Lapslie, Kane Vincent-Young and Dion Sembie-Ferris are all included in the squad travelling to Cardiff, along with fellow U21s regulars Byron Lawrence and Jamie Harney.
Midfielder Alex Gilbey is still unavailable due to an ankle injury, while long term absentees Magnus Okuonghae, Frankie Kent, Tosin Olufemi and Drey Wright all continue with their respective rehab programmes.
Apart from Gordon, boss Tony Humes has no other injury worries following the 0-0 draw at Crawley and has a ready made replacement in Cole Kpekawa should Gordon fail to recover in time.
The full back picked up an injury last weekend but is hoping to be fit for the FA Cup tie in South Wales.
U's face Cardiff City on Friday evening, with Ben Gordon the only fitness doubt.