The Hammers are dreaming of European football next season after their decent start to the 2015/16 season.
Dimitri Payet is undoubtedly one of the signings of last summer and it looks as though the club can build around his creative brilliance as they look to push on in the second half of the campaign.
Slaven Bilic will probably be hoping to add to his options during this window and the ex-Besiktas boss will hopefully be able to invest as successfully as he did in the summer.
With the move to the Olympic Stadium approaching, the Hammers can offer a bright future to any potential signings and their owners are more than willing to invest as the club looks to go to the next level.
Bilic’s side already boasts plenty of quality, but this window could see the squad add depth and class that will allow them to become regular challengers for a place in the top 6.
Here is the ideal XI for Bilic..
The West Ham keeper is one of the most under rated players in the league at the moment.
Since winning his place as first choice, the stopper has provided some wonderful performances and won his side points on several occasions.
It is possible for West Ham to find right-backs from other clubs, but Debuchy would be a good addition for the Hammers.
Although it hasn’t gone to plan for the Frenchman at Arsenal, he is still a quality option for a mid-table side and would provide an attacking impetus that Jenkinson rarely has done.
Tomkins, despite the signing of Ogbonna, just about keeps his position in the starting XI.
He is a real fan favourite and has formed a solid partnership with Winston Reid over the past season or two.
It is probably a surprise to some that Reid has remained at West Ham, considering his excellent performances over the past few seasons.
The shortage of centre-backs makes players like Reid a really valuable commodity and the Hammers have done well to retain their man.
Cresswell hasn’t quite caught the plaudits like he did last season, but the youngster will still be harbouring ambitions of getting on the plane to Euro 2016 this summer.
Bigger clubs might come calling for West Ham’s left-back, but he would be sensible to stay put.
Kouyate has been used in a number of roles throughout this season and his physique makes him a highly versatile player for Bilic.
His long limbed running style is comparable to a young Abou Diaby, or Vieria, and he is a player that is vital for adding momentum to the midfield.
Inter have had quite a good time of it this season, but Guarin would surely be interested in a move to the Premier League and the two Davids would be able to offer a tempting amount of money if they really wanted their man.
Mark Noble has been a reliable servant for the Hammers, but extra midfield options are evidently needed if the club are to push to the next level.
One of Bilic’s best signings since arriving at the club, Lanzini has a bright future ahead of him at West Ham and the way he links up with Payet is crucial.
Victor Moses may have hoped for more minutes when joining on loan, but Lanzini has made the position his own.
For my money, Payet has been the signing of the season in the Premier League.
The ex-Marseille man has recently returned from injury and West Ham immediately have a spark back to their game. Payet’s fitness will be the defining factor in the Hammers’ second half of the campaign.
As Pato has rejuvenated himself in Brazil, it looks as though a lot of clubs will be chasing for his signature.
The ex-Milan forward has largely been a winger in his second spell in Brazil and he would fit nicely as a wide man in this West Ham side.
Pato, if needed, would also be able to fill in as central striker if Sakho was unavailable.
West Ham fans can hope that Andy Carroll is finally on his way out the door, because Diafra Sakho has continued to show that he is a class above the Geordie centre-forward.
Sakho has his own troubles with injury, so an extra striker might be worth signing as backup.