Defenders from Derby County and Reading who could come in after Aaron Cresswell's injury.
West Ham's Aaron Cresswell in action with Tottenham's Ryan Mason
As West Ham continue to hunt for a new left-back to come into the club with the news that Aaron Cresswell is set for an extended spell out of the side with knee ligament damage.
The former Ipswich Town man could be out for at least four months, meaning Slaven Bilic will have to be without his first choice fullback for a large chunk of the coming season.
But considering Cresswell was such a success having come from the Championship, we take a look at three other players the Hammers could look to sign from that division.
West Ham have reportedly had a bid turned down for the Swede's twin brother Martin, who plays for Norwich City. But with both players quick, left footed and playing in a similar style, Marcus Olsson would be a viable and possibly cheaper alternative.
Derby's Marcus Olsson in action with Sheffield Wednesday's Aiden McGeady
Though his brother is the more established player, Marcus Olsson has gotten plenty of first team football over the last few years both at Blackburn and after joining Derby this January.
If the Hammers are looking for another young English fullback who is excellent at going forward, then arguably Reading man Obita is the best the Championship has to offer. Long rated as one of the Royals' top young talents, the 22-year-old now has three years of regular football under his belt at the Madejski Stadium.
Birmingham's David Cotterill in action with Reading's Jordan Obita
Very quick and capable of playing further forward, Obita would be a player that could come in and offer both room to improve and also significant resale value.
The Wales fullback enjoyed a superb tournament as his country reached the European Championship semi-finals, and though he is most comfortable on the right flank, he is more than capable of doing a job on the left side of defence.
England's Raheem Sterling in action with Wales' Chris Gunter
Still just 27-years-old but with over 70 international caps to his name, he should be entering what are his peak years. Gunter would offer cover in both fullback positions, and would have hugely benefitted from his experiences in France over the last couple of months.