Southampton have confirmed Kenyan midfielder Victor Wanyama has joined the club on a four-year deal for a fee estimated to be in the region of £12million.
That figure breaks the previous SPL transfer record for the £9.5million paid by Spartak Moscow for Aiden McGeady.
It also makes Wanyama the biggest signing Southampton have ever had, eclipsing the £11.8million paid for Gastón Ramírez in the summer of 2012.
A bid was accepted by Celtic on June 23, but the deal became complicated due to a disagreement over agent fees between the representatives of Wanyama and Southampton's executive chairman Nicola Cortese.
Although the deal was never off, the deal was shrouded in doubt for a sustained period.
Speaking to the club's official website after signing his four-year contract with the ambitious south coast club, Wanyama said: "Southampton is a good club and it has good players, so I just want to train hard and work hard to be a part of the starting XI."
Southampton manager Mauricio Pochettino confirmed his delight at the capture of Wanyama, but underlined that the club does business on its own terms: "I am very pleased to have secured the signing of Victor because we are a big admirer of his talents and he will fit in well to the team here at Southampton.
"I want to stress that the deal could have been done sooner, but this shows that we do business on our terms."
Wanyama will tomorrow fly to Girona alongside his new team-mates, as they embark on a pre-season training camp.
The energetic Kenyan dynamo becomes the club's second signing of the summer following Croatian Dejan Lovren to St Mary's.
Wanyama will be hoping to make his Premier League debut when Southampton visit West Bromwich Albion on the opening day of the season.
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