Manchester - Louis van Gaal was unwilling to discuss reports that Manchester United have now switched their sights to Southampton's Senegalese winger Sadio Mane.
Speculation has increased over the past week that Van Gaal has identified Mane, and not Pedro, as the club's key new signing.
"I cannot answer that question neither because I cannot interfere," Van Gaal said.
"I don't want to interfere. It's for Ed Woodward doing the things and he does it very well, I think."
United will look to extend their winning start at home to Newcastle United on Saturday, when Schweinsteiger could make his full debut.
The former Bayern Munich midfielder, 31, has been used as a substitute to date, but could replace vice-captain Michael Carrick in a midfield holding role to gain his first start in the Premier League.
"It's a matter of time," said Van Gaal. "Maybe it shall happen tomorrow (Saturday). You never know. I think he can still do better because when you are not fit enough then it is difficult to show your highest level.
"But I think it's also a matter of time and we have seen a solution in rotating our (second) captain, Michael Carrick, with Schweinsteiger.
"I think it's a very good solution because we can spare them both for the big moments."