The Belarusian international has endured a terrible two years since leaving Emirates Stadium, and the the 29-year-old has acknowledged that he should never have left Arsenal having established himself as an integral member of Arsene Wenger’s squad during his three-year stint in the Premier League.
Hleb failed to break into the first team during Barcelona’s treble success in 2009 before being shipped out to former club Stuttgart on loan.
Hleb told Sky Sports: "Of course it is my fault I left Arsenal but this has happened.
"Not a lot of players say no to Barcelona but if I had known before what would happen of course I wouldn't have gone.
"I won the UEFA Champions League with Barcelona in 2009 but I didn't play a lot. I lost a bit of my form and confidence.”
“I made a decision to come to Birmingham," he said.
"I decided for one year to come back to the Premier League where I am very happy and want to take this chance."
