Bayern Munich winger Serge Gnabry failed to make the grade at Arsenal due to a combination of bad luck and injuries, according to Lukas Podolski.
Gnabry rose through the youth ranks at Arsenal before graduating to the senior squad in 2012 at the tender age of 16.
The pacey attacker was tipped for a bright future at Emirates Stadium, but ended up being shipped out on loan to West Brom after struggling to earn a regular place in Arsene Wenger's line-up.
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The Frenchman was reportedly eager to retain Gnabry's services, but he pushed for a move away from the club in the summer of 2016, with Werder Bremen eventually snapping him up for £5 million.