Elneny did not return to training after Swiss outfit's winter break.
Midfielder was described as the 'most talented 18-year-old I've ever seen' by Barnsley manager Lee Johnson.
The former Queens Park Rangers boss Harry Redknapp believes Manchester City will 'pip' Arsenal to the title.
The Gunners boss has given his players some time off but worries it may do more harm than good.
Chief executive Hans-Joachim Watzke says Bundesliga club will find a solution if Aubameyang leaves.
Reports suggest the Gunners could announce the midfielder's arrival imminently.
27-year-old German international scored one goal and assisted another in 2-0 win over Bournemouth.
Karim Benzema has been linked with the Gunners, but Jonjo Shelvey might be a more realistic target.
The final Boxing Day Premier League game comes from St Mary's where Arsenal travel to Southampton.
Leicester City look to maintain surprise Christmas lead as Arsenal and Manchester City loom.
Ronald Koeman says no player will be allowed to leave St Mary's during the upcoming January window.
Forster has been out since March with a knee injury but has now resumed first-team training.
Manchester United's poor form has prompted speculation Louis van Gaal could be replaced by Jose Mourinho.
The French boss says victory over Manchester City puts his side in a good position.
Former Premier League winger Andrei Kanchelskis says the Gunners would suit the Russian.
Costa Rica international spoke to IBTimes UK after the victory over Manuel Pellegrini's side.
Arsenal manager pleased with side's resolve in 2-1 win which could prove crucial in the title race.
The Chilean international will be out of action until 10 January.
The Chilean boss says City were better than Arsenal in the 2-1 defeat at the Emirates Stadium.
The final Premier League game before Christmas sees a clash between the main two title contenders.
The Spaniard was linked with a big-money move to Arsenal and Liverpool just two years ago.
England international has not played since April due to a long-term knee problem.