Unai Emery is surely desperate to add to his options at left-back in the January transfer window.

The Spaniard has been forced to use Granit Xhaka in defence at times this season with Nacho Monreal and Sead Kolasinac both struggling for fitness. Monreal, in particular, has found it tough. The Spaniard is approaching the twilight of his career, given that he's 32-years-old, and Emery will need to identify a successor soon.

The perfect addition to his squad would be Benfica full-back Alejandro Grimaldo. Valued at £22.5m by Transfermarkt, the Spaniard is a graduate of Barcelona’s youth academy but similar to Hector Bellerin, opted to leave the Spanish giants in search of first-team football. Since moving to Benfica, the left-back has established himself as one of the finest full-backs in Portugal.

Grimaldo made 28 appearances in the league last year, notching four assists, and has made an excellent start to the new campaign with two goals and one assist to his name already.

Blessed with terrific pace, the defender would have no problem matching the speed of some of the league’s fastest attackers.

The Spanish u-21 international also poses a significant attacking threat, averaging 1.3 key passes per game, from defence this season - which could mean even more goals for Pierre-Emerick Aubameyang (WhoScored).

The 23-year-old is still young and developing into an even better player – working in a squad of Arsenal’s quality under Emery’s leadership could do wonders for his development. Bringing Grimaldo to the Premier League would be a wonderful move from the Gunners.

He wouldn't be cheap, with his current team likely to demand beyond his market value, but a move for him would solve Arsenal's issues in this position for years to come.

Arsenal fans, thoughts?