Viktor Gyokeres has issued a rallying cry to a resurgent Arsenal , urging them to seize an "amazing opportunity" as they stand on the brink of their first-ever Champions League title. The Gunners are just one match away from reaching the competition's final for the first time in two decades, a tournament they have never previously won. They are set to host Atletico Madrid in the decisive second leg of their semi-final on Tuesday, with the tie finely balanced at 1-1 after Gyokeres opened the scoring in Spain with a penalty in last week's first leg, only for Julian Alvarez to equalise from the spot. The Sweden international has since continued his impressive run of form, netting twice in Arsenal’s morale-boosting 3-0 victory over Fulham on Saturday. This performance, which took his season tally to 21 goals, comes as the club also chases a first Premier League title since 2004. Speaking on the eve of Tuesday’s contest in north London, Gyokeres highlighted the positive atmosphere within the squad.…