Celtic have completed the signing of Coventry left-back Danny Fox on a four-year contract.
The 23-year-old will be eligible for Wednesday's Champions League qualifier against Dinamo Moscow after Celtic moved quickly to snap him up.
Fox told the club's official website: "I'm a bit shellshocked, but I'm really grateful to the manager and the coaching staff for bringing me here. It's a dream come true."
Celtic moved for Fox hours before Thursday night's deadline for registering their squad for the third qualifying round.
And, although they could not complete the deal in time, Fox will be eligible for Wednesday's home leg if, as expected, manager Tony Mowbray opts to utilise his one wildcard option.
Mowbray fended off competition from former club West Brom - who had a package of just under £2million rejected by the Sky Blues.
Fox was also thought to be the subject of several failed bids by Nottingham Forest manager Billy Davies earlier this month.
City revealed they had agreed to keep the transfer fee confidential as they announced the move on their website.
Fox, who was named in the Coca-Cola Championship team of the season, has already joined up with his team-mates in London and is expected to make his debut in the Wembley Cup this weekend.
"It's all happened so fast but I'm delighted to be here," Fox said. "I got a phone call on Thursday afternoon to tell me to head for Glasgow and it's all been a bit surreal."
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