Rio Ferdinand has urged Manchester United to sign either Saul Niguez or Declan Rice before this summer transfer window closes.

United have already signed Raphael Varane from Real Madrid, Jadon Sancho from Borussia Dortmund and Tom Heaton from Aston Villa this summer window.

But Ferdinand feels the club could still bolster Ole Gunnar Solskjaer’s team with another signing before the window closes at the end of the month and claims Saul and Rice are ‘perfect’ targets.

Saul has been heavily linked with a transfer move to the Premier League over the past one year, and he helped fire Atletico Madrid to the La Liga title last campaign.

Rice, meanwhile, has established himself as a key player at West Ham United in recent seasons and starred for the England national team at this summer’s Euros.

“I think if the right player becomes available for the right price, Ole Gunnar Solskjaer will go and get him,’ Ferdinand told his FIVE YouTube channel.

“The problem is who is out there and who could be a good fit? Saul Niguez would be a perfect fit and he’s asking price was £160m a couple of years ago, now it’s more like £40-50m.

“In today’s game that’s a decent price for someone like him who has Champions League experience. I’m a big fan of his. If you can get him in this window, I think you do it.

“I think Declan Rice would be a massive addition to this squad. I’m a massive fan of his. I would love to see him keep progressing.

“He was brilliant for England in the summer. I think if West Ham keep him they’ve done well. I think he does well staying at West Ham or if he goes.”

The Red devils kick-started their Premier League season with a 5-1 win over Leeds United on Saturday. And the club travel to Southampton this weekend.