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Petr Cech will miss a large chunk of Arsenal ’s push for a top-four place.

Keeper Cech suffered a calf injury in the defeat at West Brom on Saturday and a scan has revealed he will be out for four weeks – a major blow for under-fire Gunners boss Arsene Wenger.

The 34-year-old will miss crunch league games beginning with Champions League qualification scrap rivals Manchester City at home on Sunday week, then the matches against West Ham, Crystal Palace and possibly Middlesbrough.

(Image: PA)

He could return for the FA Cup semi-final with City at Wembley on April 23.

Back-up David Ospina is fit, but has been in poor form — and wants to leave the club.