The City duo will take part in the final World Cup preparation camp, which will include a friendly against Portugal.
The U20 World Cup takes place in Poland from September 5-27.
England will take on Canada, Tanzania and Brazil in the group stages.
The full squad will be confirmed at 14:00 (UK) on Thursday.
Match poster featuring Manchester City vs FC Barcelona on Saturday, 15 August at Joie Stadium, kick-off 16:00. Presented by Joie, champions v champions.