Southampton are moving closer to striking a deal to sign Ben Brereton Diaz following his tough stint at Villarreal. The transfer window is heating up at St Mary’s, as Russell Martin continues to push to land some of his favoured targets. Villarreal forward Ben Brereton Diaz is the most likely target to arrive on the south coast this summer, as Southampton move closer to striking a deal with the Spanish club. While the Chilean has shown what he is capable of in England throughout his career, things didn’t go as well for him in Spain, with an insight now being provided. READ MORE: Southampton ‘c…