Sunderland head coach Gus Poyet is desperate for a transfer breakthrough after growing frustrated with a recent lack of new arrivals
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Denis Irwin believes new Man Utd boss Louis van Gaal will be a resounding hit at Old Trafford.
Van Gaal's first game in charge comes on Wednesday when United take on the Los Angeles Galaxy in the first game of their US tour.
"We would have liked him in earlier, but he did well with the Netherlands [at the World Cup]," Irwin said.
"Slowly but surely he will be able to put his own imprint on the way he wants Manchester United to play.
"The manager has won trophies all over the world. His experience will be good for us. Next season we have to aim for the summit."
Arsenal and England winger Theo Walcott will miss the start of the new season with a knee injury, but is set to resume training by the end of August.
Walcott, 25, ruptured the anterior cruciate ligament in his left knee during an FA Cup third-round tie against Spurs last season, which caused him to miss the World Cup.
"We expect him to be back in full training at the end of August," Arsenal boss Arsene Wenger confirmed.
Liverpool have agreed sell striker Fabio Borini to Sunderland in a deal reported to be worth £14m.
Borini, 23, spent last season on loan at the Stadium of Light and his crucial goals helped them avoid the drop.