Arsenal will be without injured full-back duo Nacho Monreal and Sead Kolasinac for the Europa League clash against Sporting Lisbon on Thursday, and that has forced manager Unai Emery into including Carl Jenkinson in the 21-man squad for the clash.
The 26-year-old right-back last played a competitive game for the Gunners in November 2016, with series of injuries disrupting his progress at Arsenal.
Jenkinson saw his loan at Birmingham City last season come to an abrupt end after a shoulder injury sidelined him for five months.