Celtic forward Sead Haksabanovic is at the centre of a battle between former sides Rubin Kazan and IFK Norrkoping over an unpaid transfer case set to be taken to FIFA.
The 23-year-old completed his transfer to the Scottish Premiership champions on deadline day after the Russian side reluctantly allowed their star man to become Ange Postecoglou 's eight summer signing – just 12 months after signing him for £5.5million from the Swedish minnows.
The Montenegro international reportedly moved for a fee in the region of £2.6million, which has been flagged by Norrkoping chairman Sakarias Mardh.
Mardh has told Swedish outlet NT Sport that the Rubin have yet to pay £3.2million of the transfer fee to the club following Haksabanovic's move to the Russian Premier League last summer.
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