Fresh from signing a new contract Arsenal captain Laurent Koscielny has demanded his team-mates ramp up their performances, beginning with the Premier League game at struggling Swansea on Saturday. Koscielny, who has committed himself to 2020 -- which would mean the French defender has been at the Gunners for 10 years -- says it is vital they rediscover their form having slipped to fifth in the table, eight points off leaders Chelsea. Koscielny and Giroud, who also committed himself to 2020, are likely to start against second-from-bottom Swansea but Coquelin, who signed a four-year contract, is out with a hamstring injury.