Arsenal goalkeeper Wojciech Szczesny has no doubts Per Mertesacker will prove his worth in the Premier League.
The Pole has made a point of analysing the performances of under-fire Germany star Mertesacker.
Szczesny said: “Per has been very good. You don’t pay £10million for a centre-back who is no good.
“Everyone needs time to adjust to English football and Per is an experienced player. He’s looked very good and is getting better and better.”
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