Southampton have accused Liverpool of a possible illegal approach for Virgil van Dijk.
Mirror Sport revealed on Monday that the Reds had won the race to sign the Dutch defender in a £60million deal.
Manchester City and Chelsea were also keen but Jurgen Klopp persuaded Van Dijk to choose the Anfield project, indicating an illegal manoeuvre may have been used.
Southampton are angered by the situation because they have not received any contact from Liverpool over the defender.
They have asked the Premier League to investigate a possible illegal approach.
A deal for Van Dijk would make him the world’s most expensive defender, with the Dutchman offered a £200,000-a-week deal.
Van Dijk has spent two past two months deliberating his future, after being informed that the three Premier League big guns were in a fight to sign him, with Arsenal also interested.
He has spoken to all three clubs, but even though Liverpool were considered as outsiders for his signature, they won the race because of the vision Klopp sold to the defender.
And that has angered Southampton, who may now dig their heels in and refuse to sell Van Dijk to the Reds.
Meanwhile, former City defender has slammed the proposed price tag.
“He has proven himself at Celtic and gone to Southampton, and now he is going to a top club.
“He will improve by going there and playing with better players and playing in the Champions League.
“The Premier League is awash with so much money it does start to cause problems.
“£50million to £60million is ridiculous.”