Haas back with Black Cats

It had been thought the deal to take the Switzerland international to the Hawthorns was completed on Wednesday but a disagreement over personal terms as seen the player return to the Stadium of Light.

"We have asked Bernt Haas to come back to Sunderland because personal terms have not been agreed between the two parties," a spokesman told the official Sunderland website.

"This is not a problem between the clubs, because a fee has been agreed with West Bromwich Albion.

"While it was announced by West Brom that the transfer was completed, this is not the case and we have asked Bernt to report back and he is due to meet with the club secretary."

The news will come as a major blow to Sunderland boss Mick McCarthy who is keen to sell players in an effort to get funds to sign new players.