By Joe Nelson

Arsenal will step up their pursuit of Valencia’s Shkodran Mustafi after Gabriel was ruled out until October, according to a reliable journalist.

BBC reporter David Ornstein claimed on his personal Twitter account on Tuesday afternoon that Gabriel will sidelined for between six and eight weeks with an ankle sprain.

This came after the Brazilian defender had posted a message on Tuesday morning on Instagram, reassuring Arsenal fans that his injury was not as bad as first feared.

But Ornstein, who is a reliable supplier of Arsenal news, claimed Arsene Wenger will now accelerate the club’s bid to land a new defender ahead of the Premier League season.

Wenger has admitted that he is scouring the market for a new centre-back, although midfielder enforcer Francis Coquelin is being considered as a stop-gap option in addition to rookie pair Calum Chambers and Rob Holding.

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Arsenal’s interest in Germany has been widely reported in the last few weeks even though he has a release clause of £42million.

Germany international Mustafi has won 12 caps for his country after establishing himself as a regular for his La Liga side since his transfer from Sampdoria in 2014.

The former Everton academy graduate featured for the World Cup winners at Euro 2016 and scored in the opening match against Ukraine, which his team won 2-0.

Mustafi has three years left on his current deal in Germany but could be tempted by a move to the Premier League.

In other Arsenal news, manager Arsene Wenger has lined up this ex-Manchester United fan favourite.