Sunderland are working hard to bring in new players ahead of the Premier League season, insists first team coach Robbie Stockdale.
The Black Cats remain the only top flight side yet to make any signings with the new campaign less than a fortnight away.
The depleted squad has been hit further by injuries to Jermain Defoe and Jan Kirchhoff, with Billy Jones also going off injured in the 1-1 draw with Montpellier HSC.
Defoe is out with a thigh strain and is set to miss the rest of pre-season, while German midfielder Kirchhoff has a hamstring strain.
Patrick van Aanholt (groin) and Jack Rodwell (calf) are also out injured but neither are serious and both could feature against Borussia Dortmund, in Austria, next Friday night.
Stockdale admits the injuries are "not ideal" but says the club is working round the clock to bring in new signings.
The latest player to be linked is Dynamo Kiev and Croatia defender Domagoj Vida, 27, for a reported £5million. He can play centre-back and right-back.
"We’ve obviously been looking, and the manager will have his targets," Stockdale told the Echo.
"I think over the next couple of weeks, hopefully before the start of the season, we will add to the squad to help the players in it.
"We’ve been watching videos of players, we have scouting reports, so we are always on the case.
"The injuries will need to be assessed.
"Billy came off with a hip problem, but it was more of a precaution - in pre-season, you always err on the side of caution.
"It’s not ideal, but I would say that some of those injuries are not too serious. There are a couple of players left out as a precaution.
"But yes, the squad does need adding to."
The squad flew back to England straight after last night's game in Aix-les-Bains, which was attended by Sunderland owner Ellis Short.
David Moyes has not been conducting media interviews this week and is due to hold his first press conference on Monday morning.