Louis van Gaal has refused to comment on Robin van Persie's future at the club beyond the summer, putting question marks over his contract with Manchester United.
The striker has failed to live up to expectations this season, injured for the major part of the season and struggling for form for the period he was inducted into the team. The Red Devils could make a move for a prolific forward with Radamel Falcao reportedly said to leave alongside Van Persie.
Van Gaal has already completed the signing of Memphis Depay, who will join the club after the season ends on 24 May. The Dutchman is in the market to spruce up his defence and will also invest heavily in the midfield for a backup to Michael Carrick, who has been strung with injuries this season and is unlikely to last for the entirety of a season.
However, his biggest concern would be the forward line, which after the likely transfers would only have Wayne Rooney to lead the attack, something they need to address before the season starts in August.
"You have to wait and see. I shall not say who I am speaking to [about the future]," Van Gaal said.
On the number of players he will sign, the United manager said, "I think that is also dependable on how many players shall go. That's also an issue. It's a process and not a matter of one or two players. I cannot say anything about that."
The Dutchman is also not pleased with the timing of the transfer window and wants to have it closed before the season starts.
"I have strived many times to change the transfer period. It has to be finished before you prepare your team for the season. Last summer we had the World Cup and then a lot of players came late in. We had a lot of purchase at the last month so we have to prepare our team in the Premier League and that costs us a lot of points. Now I hope we shall finish our business much earlier," he added.