The Colombia international has put pen to paper on a long-term contract at the Gunners after Arsenal agreed a £3.5m deal with Ligue 1 outfit Nice.
Szczesny was the north London side’s undisputed first-choice goalkeeper last season ahead of the compatriot Lukasz Fabianski, who quit Arsenal this summer.
And the 24-year-old cast aside any potential rivalry to congratulate his new team-mate on his Premier League move.
Last week, Szczesny was quick to pay tribute to his former team-mate Fabianski after the 29-year-old quit the Gunners.
“I’ll miss Lukasz Fabianski, he challenged me every day in training for the No 1 spot,” said Szczesny.
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