Mertesacker has missed the entirety of this season.
Karius has established himself as the first choice goalkeeper at Liverpool.
Firmino has scored five goals in the league this season.
Leicester City has won only one game in the last nine.
Bellerin has missed the last six games due to an ankle injury.
Hernandez scored 26 goals in all competitions for Bayer Leverkusen in the 2015/16 season.
Smalling last featured for United in their 4-0 defeat to Chelsea in October.
Balotelli has scored six goals in six appearances for Nice.
Stoke have not beaten Arsenal away from home in the last 35 years.
Boss addressed media ahead of La Liga trip to Osasuna.
Real Madrid looking to continue impressive La Liga form.
Barcelona looking to return to winning ways in La Liga at El Sadar.
John Terry remains available while Oscar is sick.
Manager Mauricio Pochettino believes the club will find a successor to outgoing head of recruitment.
Italian boss admitted that Mikel John Obi may leave
Los Blancos host the Galicians before their trip to Japan for the Fifa Club World Cup
Sadio Mane and Joel Matip available for visit of West Ham in the Premier League.
Mark Hughes has confirmed that the club are in talks with Derby County in a bid to keep loanee Lee Grant.
However, Cheikhou Kouyate is unlikely to return from a groin injury until Wednesday's visit of Burnley.
Winning the Premier League title might convince the pair to extend their contracts.
18-year-old starlet was already linked with Arsenal in 2015.
Tottenham are currently six points ahead of Manchester United.
Los Che already tried to sign the Italian in a summer swap deal with Andre Gomes
Mkhitaryan has two assists and a goal to his name in the last three appearances for United.
Matip is yet to taste defeat in the league with Liverpool since his arrival this summer.
Peter Beagrie believes the world's most expensive player has been outperformed by Alli.
Mauricio Pochettino's side avoid most of the biggest threats waiting in the draw.
Roma, Schalke, Ajax or Lyon are among the sides waiting for Jose Mourinho's side.
Van Dijk signed a new six-year deal at Southampton last season,
The Ivory Coast international will leave to play in the Africa Cup of Nations in January.