Arsenal striker Eddie Nketiah stepped up from England’s Under-20s squad to train with the senior side on Thursday.
Gareth Southgate has only 18 outfield players to choose from for the opening UEFA Nations League clash with Spain on Saturday and a friendly against Switzerland three days later.
With both Raheem Sterling and Adam Lallana withdrawing through injury, the Three Lions boss opted against calling up replacements for the pair.
Instead he has dipped into the talent pool in place at St George’s Park, with Liverpool’s Dominic Solanke working with the group earlier in the week.
With the Under-21s in action on Thursday night, Nketiah was given the chance to train alongside the main squad.
Nketiah, 19, is highly regarded at Arsenal and has hit 15 goals in 15 youth internationals to date.