Juan Cuadrado is expected to be the subject of a bidding war at the end of the season, but only if current owners Fiorentina and Udinese can agree on his rights.
The Colombian international has set Serie A alight this term wearing a Fiorentina shirt, but he is half owned by Udinese.
The two clubs were expected to resolve his ownership this summer with Fiorentina buying out Udinese's share for around £8m.
With Manchester United, Arsenal, Zenit Saint Petersburg, Barcelona and Bayern Munich all said to be forming a queue for Cuadrado's signature, it looked likely that Fiorentina would then sell the 25-year-old on for a tidy profit.
The disagreement casts uncertainty over Cuadrado's future and could be a stumbling block for the long line of potential suitors.
In the event that Fiorentina and Udinese can't agree a deal, Cuadrado's co-ownership may have to be extended for another season or could even have to compete for his ownership in a blind auction.
The latest developments come as bad news to Manchester United and Arsenal and they may see Cuadrado as too much trouble in the summer market if the situation continues.