Alex Song has struggled to hold down a regular first-team spot under Slaven Bilic

West Ham will not make the loan signings of Alex Song, Victor Moses and Emmanuel Emenike permanent in the summer, according to Sky sources.

The trio are currently on-loan to West Ham until the end of the campaign from Barcelona, Chelsea and Al Ain respectively.

West Ham have the option to make all the deals permanent, but Sky sources understand the Hammers have decided not to do so.

Song joined West Ham on a season-long loan from Barcelona in August 2014 and enjoyed a hugely impressive first four months at the club, playing a leading role under then-manager Sam Allardyce.

However, West Ham did not take up the option to make Song's move to the club permanent at the end of last season after midfielder sustained an ankle injury.

Song missed the start of the season because of an ankle injury

Song did re-join West Ham in August, on a second season-long loan, but remained on the sidelines for a further three months because of that injury before making his long-awaited return as a late substitute in the 4-1 defeat at Tottenham.

The 28-year-old has struggled to establish himself as a first-team regular under Slaven Bilic this season and has started just eight Premier League matches.

Victor Moses has failed to start in the Premier League since suffering a hamstring injury at Old Trafford

Song has also been an unused substitute in West Ham's previous three games.

Moses completed a season-long loan move to West Ham on the same day as Song and enjoyed a productive start to life at the Boleyn Ground, starting 11 matches and scoring in the 2-1 victory over Manchester City.

A hamstring injury in the goalless draw with Manchester United in December saw Moses miss six weeks of the season and he has not started in the Premier League since.

Emmanuel Emenike has scored twice since joining on-loan in January

Emenike joined West Ham on a six-month loan deal in January after the east London club decided to sell Nikica Jelavic to Chinese second division side Guizhou Renhe.

The 29-year-old forward has scored two goals in nine appearances - both goals coming in the 5-1 FA Cup fifth-round victory over Blackburn Rovers - and started Saturday's 2-2 home draw with Crystal Palace.