LONDON - Tottenham Hotspur striker Richarlison could be out of action for a month due to a knee problem, Ange Postecoglou said on Friday, in another injury blow as they look to reclaim a top-four spot.

The forward was in a rich vein of form recently, scoring 11 goals including 10 in the Premier League, but picked up the injury in a 2-1 home loss to Wolverhampton Wanderers last month.