Darwin Nunez has already shown Erik ten Hag what he is missing at Manchester United

There is already a buzz in the air as Erik ten Hag begins his first week as the manager of Manchester United.

Ralf Rangnick is set to lead his side for the last time against Crystal Palace this weekend, but there can be no ignoring the elephant in the room of Ten Hag's presence and his first few days post-Ajax.

United were eager to have a new manager in place for this very reason. The club has paid the price previously for having a break in between regimes, but now time is of the essence and a seamless transition between old and new is essential if they are to hit the ground running under their new boss.

READ MORE: Erik ten Hag might get a reaction from Manchester United players this week

A key focus for Ten Hag this week will be evaluating the squad he already has at his disposal. Decisions will need to be made on who will form an integral part of it next season, who is surplus to requirements, who they should fight to keep this summer and who are the most promising youngsters ready to supplement the squad.

Despite such mitigation, it is clear United need a new forward in the coming months, with interim manager Rangnick having already advised the club to sign two if at all possible.

One of those needs to be a physical option up front who can eventually replace Cristiano Ronaldo when he leaves; the other will need to be a versatile winger, ideally someone who can fill the enormous void on the right-hand side of the attack.

But with other more glaring issues across the pitch, United might only be able to sign one this summer, and a proven No.9 would certainly be the most advisable given their over-reliance on Ronaldo and the upcoming exit of Edinson Cavani.

If that is the case, United could do far worse than Darwin