Manchester United are preparing a major splurge in the summer with the Glazers expected to hand new manager Louis van Gaal a transfer budget of upto £100m in the summer, according to the Daily Mirror.

Mats Hummels is on top of the new manager's hitlist alongside the likes of Kevin Strootman, Toni Kroos and Marco Reus in the summer. The defender has been a rock for the second placed team in the Bundesliga and will be a good replacement for Nemanja Vidic, who is making his way to Inter Milan in the summer.

Van Gaal is favourite to take over from Ryan Giggs, who is currently working as an interim manager under the untimely sacking of David Moyes after a disastrous year in office for the former Everton man.

The former Everton man failed to replicate the success of Sir Alex Ferguson and was shown the door after United were without any realistic chance of making the top four.

Hummels is expected to be available for a fee in the range of £30m and will give the Red Devils some much needed cohesion in defence, which has been lacking this season.

Van Gaal is familiar with the player during his time at Bayern Munich and wants to undo his error of having sold the player to Dortmund.

United will face competition from Barcelona, who are also in the market for a defender and will make a move if the player is made available. The Catalans are in the market to replace Carlos Puyol, who has missed most of the season through injury.

The Dutchman is also a keen admirer of Strootman but may have to wait till the January transfer window as the player is currently out of contention with an anterior cruciate ligament injury.

United are also preparing a bid for Marco Reus but it is unlikely that Dortmund will sell both their star players to the same club in the same window, especially with Robert Lewandowski set to make the move to Bayern Munich in the summer.

Meanwhile, Toni Kroos is still in United's plans in spite of Bayern stating that the midfielder is going nowhere this summer.