Manchester United have been struggling in their central defence over four last seasons. The Red Devils really need to buy world-class defenders with the transfer market is set to reopen in the summer.

The Jose Mourinho side have conceded 23 goals in the Premier League this season and all caused by the poor form of the centre-backs.

Defenders like Eric Bailly, Marcos Rojo and Phil Jones have been sidelined for several times. The injury problem forced the Portuguese boss to play Chris Smalling and the last summer signing Victor Lindelof.

The partnership has cost the team numerous times, the reason Mourinho needs to look for quality defenders this summer.

Now, let’s take a look at 5 best centre-backs the Red Devils should hunt during the summer transfer window.

5. Samuel Umtiti – Barcelona

The French defender has shot into fame following his move to Barcelona from Lyon on a €25m deal in the summer of 2016.

Following the departure of Argentine Javier Mascherano, Umtiti has proven to be one of best signings for the Catalan side.

The France international has made an incredible partnership with Spain international Gerard Pique at Camp Nou.

The 24-year-old, who has been in his best form since he joined the Spanish giants, would be a brilliant signing for United.

The Lyon star, who has a £53m-release-clause in his contract with Barca, has made 33 appearances so far this season.

4. Stefan de Vrij – Lazio

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Netherlands international defender De Vrij is really enjoying his football in Serie A with Lazio. The former Feyenoord ace and has been an outstanding defender since he signed his first professional contract with the Dutch side in 2009.

The 26-year-old, who is also a key player for the Dutch national team, will be out of contract at Stadio Olimpico this summer.

This could facilitate Manchester United to land the centre-back, who is also in Liverpool and Arsenal radar.

De Vrij, who boasts 31 caps for the Dutch national team, has also scored 5 times this season.

3. Harry Maguire – Leicester City

Maguire has started his career at Sheffield United in 2011 when he was 18 years old before moving to Hull City after four seasons.

After one season at KCOM Stadium, The Tigers were relegated from the Premier League. But helped them to be back immediately in the Premier League following their promotion via the 2016 Football League playoffs.

During the summer of 2017, the 25-year-old moved to Leicester City signing a five-year contract for a £12m deal.

Maguire has then established himself as one of the best centre-backs in the Premier League. Meanwhile, The Foxes have reportedly put a £50m price tag on the player.