Gordon previously played in the Premier League with Sunderland.
Andres Iniesta, Sergio Busquets and Rafinha are ruled out for the second leg of the quarter-finals.
Manchester United registered a 2-0 win over Hull City in the first leg at Old Trafford.
The Argentine international missed the 1-1 draw with Stoke through illness.
Everton have signed the German on loan until the end of the season.
Chief executive Hans Joachim-Watzke says huge offer would trigger talks with Gabon striker.
Mason is currently recovering in hospital after suffering a skull fracture.
Chelsea and Manchester City had also been linked with his services in recent months
Real Madrid looking to turn around a 2-1 deficit in the second leg of the Copa del Rey quarter-final.
Argentine international has been sidelined with a hip problem since October.
Donkor will join Everton's Under-23 squad.
Plenty more business will inevitably be conducted before the window shuts on 31 January.
The Brazil international says Jurgen Klopp was key to his decision to extend.
Former United manager says Jose Mourinho has done 'a great job' since taking over at Old Trafford.
Liverpool trail the first leg by a solitary goal.
Bailly has not played since New Year's Eve owing to his international commitments with Ivory Coast.
Carvalho signed a contract extension last February and his deal at Sporting will expire in 2020.
Serbian international aiming to prove himself to Jurgen Klopp after completing Tigers switch.
Dutch international has established himself at Anfield.
The work, to be completed by August, will involve moving 2,600 season-ticket holders over the next three years.
Incident came the day after Gunners midfielder was sent off for ill-discipline on the field.
France boss said that his only focus is on the Copa del Rey decider against Celta Vigo on Wednesday night.
Niang has two-and-a-half years left on his current deal at the San Siro.
Ballon D'or winner was whistled at the Santiago Bernabeu during the weekend's win over Malaga.
Chile international is contracted to the club until 2018.
United take 2-0 lead to KCOM Stadium but Portuguese coach is ready to keep faith.
The Spanish side have previously claimed The Reds are ready to pay up for the Spaniard.
Adarabioyo's contract with Manchester City expires in the summer.
The Tigers plan to show their support for midfielder during EFL Cup semi-final against Manchester United.
David Moyes once again turns to one of his Everton old boys.