Manchester United may need to spend on a new left-sided centre back this summer but a raid on Barcelona is now looking a little difficult. Left-sided centre backs have become crucial to defences throughout the game and United have a top-quality one. Lisandro Martinez is an outstanding defender and possesses ability on the ball that few United defenders can match. The problem is that Martinez has managed just seven Premier League starts this season having endured injury woes. Martinez’s frustrating campaign leaves United in need of another left-footed centre back this summer. Perhaps United wil…
