Arsenal have been dealt a major injury blow ahead of Saturday's trip to Manchester United with the news full-back Hector Bellerin has been ruled out for four weeks. Bellerin sustained the problem in the closing moments of the 1-1 draw against Tottenham on November 6 and subsequently withdrew from the Spain Under-21 squad. Gunners manager Arsene Wenger, speaking at his news conference on Thursday, confirmed the defender was set for a spell on the sidelines. He said: "Hector is out for four weeks, he got injured in the last 10 seconds after a strong challenge from Danny Rose." 6 - No defender has provided more PL assists since the start of last season than Hector Bellerin (6, level with Charlie Daniels). Absence. 10:54 AM - 17 Nov 2016 75 56 OptaJoe @OptaJoe There was better news, however, on Alexis Sanchez, who Wenger believes emerged unscathed after playing for Chile on Tuesday. The forward missed the game against Colombia last week after sufferi