Quotes attributed to the 25-year-old Egypt international last week suggested he was hoping for a season long loan move to Wigan.
Southgate said: "Mido should start against Yeovil. He only returned on Friday.
"I have heard nothing from Wigan and I have told him he will get plenty of matches this season.
"He has come off the bench to score in both our first games of the season.
"He is part of things, he should realise that by the way he has got on so far."