West Ham have had reasonable success buying players from the Championship in recent times.
The likes of Michail Antonio and Aaron Cresswell still star as regulars in the West Ham line-up, while Ryan Fredericks is still finding his feet.
Others like Sam Byram and Jordan Hugill have not paid off but it is a market West Ham could look to dip into again.
With the January transfer window open, here is one player West Ham should consider from each of the 24 Championship clubs.
Jack Grealish is a talented attacking midfielder with plenty of potential but Aston Villa would probably demand an astronomical fee for their 23-year-old local boy.
Striker Keinan Davis is another talented youngster, while Chelsea’s on-loan star Tammy Abraham is one to keep your tabs on.
West Ham recently played Birmingham in the FA Cup and striker Che Adams, 22, is the one to watch in this team.
Blackburn star Bradley Dack is reportedly on West Ham’s radar, according to The Sun.
Rovers rate the 25-year-old midfielder, who has 13 goals and four assists this season, at £20m.
Cash-strapped Bolton have very few players who would interest West Ham. But 19-year-old goalkeeper Jake Turner is an exciting prospect.
There are a few players that West Ham could look to poach from West London side Brentford but their best talent is Neal Maupay. The 22-year-old French striker has scored 16 goals this season.
Goalkeeper Daniel Bentley was born in Basildon and could provide back-up to Lukasz Fabianski if Adrian leaves, while left-back Rico Henry and centre-backs Chris Mepham and Ezri Konsa are all promising young players.
Left-back Lloyd Kelly may only be 20 but he is one of the most exciting young talents in the Championship.
Liverpool want the England under-21 man, according to Club Call.
He might be a risk but Jack Marriott, 24, has 10 goals in 17 starts up front this season.
Loan stars Harry Wilson and Mason Mount are also worth keeping tabs on, in case respective parent clubs Liverpool and Chelsea decide to send them out again next season.
Winger Jarrod Bowen has 11 goals and three assists to his name this season, adding to last season’s tally of 14 goals and an assist.
Ipswich have a few exciting young players, such as 19-year-old midfielder Andre Dozzell.
Striker Jack Lankester, 18, is another promising youngster.
Dominant Swedish defender Pontus Jansson could help West Ham’s centre-back problems.
In-form striker Kemar Roofe and teenage winger Jack Clarke could also be useful signings.
21-year-old defender Dael Fry would be an exciting addition for the long-term future.
Other youngsters West Ham should consider include winger Marcus Tavernier, 19, and 16-year-old defender Nathan Wood.
Realistically, the South London club are not going to be doing business with bitter rivals West Ham, nor would the Irons be keen on any current Millwall players.
Young defender James Brown is probably Millwall’s best under-21 player.
Right-back Max Aarons would be a tremendous signing. The 19-year-old has burst onto the scene this season and continues to impress.
Other Norwich starlets worth tracking include midfielder Todd Cantwell, left-back Jamal Lewis and utility man Ben Godfrey.
Versatile Nottingham Forest youngster Matty Cash is far from the finished product.
But having operated in central midfield, on the wing and as a right-back for the Reds, the 21-year-old has shown he has the potential to progress to the Premier League one day.
Josh Earl is a highly-rated young defender at Preston with a big future ahead of him in the game.
Comfortable at left-back or centre-half, the 20-year-old stands at a towering 6ft 5in, making him a presence in the air.
Eberechi Eze is a naturally gifted attacking midfielder with an eye for goal. The 20-year-old represents England at under-20 level and has scored four goals this season.
Young striker Danny Loader is getting first-team minutes under his belt at Reading, who are 23rd in the Championship.
The 18-year-old is an England under-19 international is yet to score his first goal for the club but has shown plenty of promise with his performances.
Ben Wiles, 19, has been impressing in central midfield this season after making his first-team breakthrough.
Sheffield United are another team who might be reluctant to do business with West Ham.
But if West Ham were to look for a Blades player to poach, 24-year-old centre-back Jack O’Connell would add much-needed depth to the centre-back department.
Utility man Adam Reach has caught the eye with a number of spectacular long-range goals.
But the 25-year-old offers more than just goals and is able to play as a winger, left-back, central midfielder or attacking midfielder.
With Gary Rowett sacked, West Ham could aim to poach goalkeeper Jack Butland.
The 25-year-old England international will surely be keen on a Premier League return, although he might have to spend a period of time as back-up to Fabianski.
Joe Allen is another option for the Hammers to pursue.
Central defender Joe Rodon has been a rock at the back this season. The 21-year-old is dominant in the air and strong in the tackle.
23-year-old Wales international Connor Roberts is also thriving for Swansea this season.
Given West Ham’s injury problems at right-back and centre-back, experienced and versatile defender Craig Dawson could be a decent addition at the right price.
Striker Jay Rodriguez is another proven Premier League player who could provide back-up for the Hammers.
Nick Powell has the potential to be a Premier League player if he finds his consistency.
Four goals and four assists in 18 games suggests the 24-year-old still has work to do but West Ham could fancy a gamble.