German defender Per Mertesacker has challenged Arsenal to show they possess the strength of character to fight their way back into the top four of the Barclays Premier League with victory at Chelsea.
The Gunners head to Stamford Bridge boosted by a midweek FA Cup third-round replay win over Swansea.
It was a much-needed performance from Arsenal, who had been blasted as "timid" by manager Arsene Wenger in last weekend's 2-0 home defeat by Manchester City.
Mertesacker said: "Busy weeks are coming and the most important thing is to build up confidence after the defeat against Manchester City.
"We showed great confidence [against Swansea] right from the start. Last season, we showed we can win at Chelsea.
"When we put our opponents under pressure we are always dangerous, that must be our target at Chelsea as well.
"Let's show our character and our ability."
Reading boss Brian McDermott praised a clinical second half performance which sent the Royals through to the last 16 of the FA Cup.
Brighton, Reading and Aldershot have some big matches this weekend in the Fourth Round of the FA Cup.
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