The midfielder completed hisÂ switchÂ to Fratton Park from Rochdale for a fee worthÂ around Â£150,000 yesterday.
Cannon signed a two-and-a-half year contract at the Blues, with the club option of an additional 12 months.Â
The 22-year-oldÂ will relocate more than 250 miles from Spotland to the south coast.Â
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But the lure of playing for Pompey proved too good an opportunity to turn down.
He told the club's Youtube channel: '˜It's a massive club. I've played here before and it is great.
'˜To get the opportunity to come and sign is something I couldn't turn down and I can't wait to start playing.
'˜It's obviously a long way from where I come from but I'm willing to get used to it.
'˜It's going to be a change but I can't wait for it and I'm going to enjoy it a lot, I can tell.'
Cannon scoredÂ six goals in 127 appearances for Rochdale.Â
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