the atmosphere around the club is certainly a world way from the tense finale to the 2013/14 campaign , when arsenal were under extreme pressure in the quest to finally end a near decade wait for silverware as well as finish in the top four of the barclays .
per mertesacker will not allow arsenal to become complacent in fa cup semi-final against reading .
those ambitions were within eight minutes of being shattered when trailing 1-0 to wigan in their semi-final 12 months ago .