Benfica’s Alex Grimaldo is set for a shock move to Arsenal this summer.

According to the Express, Arsenal is understood to have submitted an opening bid for Grimaldo.

The offer is thought to be around £ 6 million for the Spanish left-back.

Grimaldo currently has just a year remaining on his current deal with the Portuguese giant.

However, Arsenal manager, Mikel Arteta, has been targeting reinforcements in his side’s left-back position given Kieran Tierney’s injury problems and Nuno Tavares’ difficulty in adjusting to the English Premier League since joining the Gunners from Benfica a year ago.

Indeed, Tavares has been heavily linked with a loan move away from Arsenal, with both Marseille and Real Sociedad interested in him.