By Harvey Byrne

The agent of West Ham target Martin Olsson has claimed it is “not acceptable” from Norwich to deny him a move back to the Premier League.

The Hammers are looking for cover for star left-back Aaron Cresswell, after he picked up a knee injury in pre-season against German side Karlsruher and will be on the sidelines for up to four months.

Sky Sports claimed that the Hammers had a £3million bid rejected for Swedish defender Olsson on Monday and the player’s agent has blasted Norwich’s decision to reject that offer as well as several other ones.

“It is true that they [Norwich] received the multiple bids, both from other clubs abroad and also in the Premier League,” said Hasan Cetinkaya to Fotbollskanalen.

“There are clubs who have put very [good] bids, especially considering that it’s only a year left on the contract. Norwich tries to stop the transfer, it is the fourth time now.

“We had an agreement on a sum – now Norwich want even more. It does not work quite so in football. Martin has been loyal to Norwich. It is not acceptable that they do [not sell].

“Martin is very clear that he does not want to play in the Championship and he wants to take the next step. He would particularly like to play in the Premier League, when he was so good in the Championship too. Martin is not a Championship player. But we do not give up. We are optimistic.”

Olsson made 28 appearances for Norwich last season, scoring one goal and providing two assists from his full-back position, but he was unable to keep the club in the Premier League.

The Mail Online have also claimed on Tuesday that West Ham have now offered £4million for the 28-year-old left-back as they look to cover for the injured Cresswell.

Cresswell was a key player last year in an outstanding season for West Ham, who defied the odds to finish seventh in the Premier League and guarantee European football for this campaign.

Slaven Bilic is keen to secure a left-back signing in time for the opening day of the Premier League season in just under two weeks time against Chelsea.

Full-back Sam Byram was moved away from his preferred right side to fill the problem position on the left side of the defence against Domzale last Thursday in the club’s Europa League tie, while Michail Antonio also moved out of his favourite attacking midfield position to slot in at right-back.

In other West Ham transfer news, David Gold has revealed that the Hammers will complete two new signings imminently.