West Ham United to negotiate freely with Sporting Lisbon again after ending William Carvalho spat

West Ham United and Sporting Lisbon have brought an end to the row to emerge following William Carvalho's failed move to east London with the Hammers declaring there are now "no barriers" to future deals between the two clubs.

The Premier League side were eager to sign Portugal international Carvalho during the summer transfer window but when they failed to get a deal done in time, a furious row broke out between the two clubs.

West Ham co-owner David Sullivan claimed a €25m (£22m, $30m) agreement had been struck for the 25-year-old, adding the move broke down because they were unable to carry out "adequate medical checks" ahead of the transfer deadline.

Sporting hit back, denying the existence of the bid with club president Bruno de Carvalho famously labelling Sullivan and West Ham's other co-owner David Gold "the Dildo Brothers" - a jibe linked to the pair's shady business past.

In a recent interview with IBTimes UK, De Carvalho insisted the experience had not soured his relationship with English clubs, adding Sporting had move on from the "strange soap" with the east London side.

West Ham have now released a statement that claims the two have come to an understanding and have put the incident behind them.

"West Ham and Sporting Clube de Portugal acknowledge that a breakdown in communication based in contacts between representatives from both clubs in respect of a possible transfer of William Carvalho was the cause of a misunderstanding.

"Subsequent to this, the clubs have had positive communications and the matter is now resolved. On this basis, friendly relations between the Clubs will resume and there will be no barriers to both Clubs negotiating or working together in the future."

The announcement would seemingly open the door for West Ham and Sporting to renew negotiations over Carvalho, should the midfielder remain a transfer target for the club.

Even prior to the reconciliation between the two sides, Sporting president Carvalho appeared offer West Ham some hope. "If we close this soap that is not interesting," De Carvalho told IBTimes UK when asked if he would be open to doing business with the Hammers again.

"It is not good for anybody because the fans deserve better, the truth, our respect. The fans are the most important thing at the club. So if we finish what was a strange soap, let's see. But I don't know if they will finish, because it was very, very strange. But I continue with a very good impression of the English clubs."

West Ham's alarming regression this season however means attracting players could prove more difficult than it was in the summer, with the club sat just a point offthe bottom of the league.