The Arsenal players were training hard on Saturday ahead of Sunday afternoon’s Premier League game against Manchester United at home.
Arsenal will head into the game at the Emirates Stadium in North London on the back of a disappointing result in the Champions League.
The Gunners were expected to win the Group F encounter against Olympiakos at the Emirates on Tuesday evening, but they suffered a 3-2 defeat to the Greek outfit.
Arsene Wenger’s side are now in serious danger of getting knocked out of the Champions League, but for the moment their focus will be on the Premier League.
The North London outfit are sixth in the league table at the moment with 13 points from seven matches, five points behind leaders Manchester City with a game in a hand.
Winning against title-challengers and second-place United at home on Sunday afternoon is going to enhance their chances of clinching the championship for the first time since 2004.
Right-back Debuchy joined the Gunners from Premier League rivals Newcastle United in the summer of 2014, but he is struggling to get into the team at the moment.
According to The Daily Star, Newcastle are considering making a move to sign back the France international in the January transfer window.
Reine-Adelaide, a talented 17-year-old winger, joined Arsenal in the summer and has trained with the first team on many occasions this season.