Arsene Wenger has warned Per Mertesacker he can not guarantee him an automatic return to the team . World Cup winner Mertesacker was dropped after an awful defensive display by Arsenal in the Champions League defeat by Monaco last week . Gabriel , signed in January from Villarreal , came in for his first Barclays Premier League start against Everton on Sunday and impressed . Per Mertesacker has been told there is no guarantee he 'll return to the Arsenal defence soon . Gabriel was signed by Arsenal to cement a first-team spot at centre back , says Arsene Wenger . Wenger , pictured with Mesut Ozil in training on Tuesday , said he can not guarantee Mertesacker game time . Arsenal vice-captain Per Mertesacker ( right ) sat out Sunday 's 2-0 victory against Everton at the Emirates . Gabriel produced a fine tackle to stop Romelu Lukaku during the game and could play against QPR . Arsenal train at their London Colney base ahead of Wednesday night 's trip to Queens Park Rangers . Wenger said : 'Like everybody , we are all here to serve the club and raise above our own interest . He has played many games , has a fantastic mentality , he has great mental stature , absolutely remarkable , and his contribution to the team has been excellent up to now . ' There were no assurances he would return at QPR on Wednesday from Wenger , who added : ' I can not tell you , I have not decided yet . Honestly . ' As for Gabriel , the Arsenal boss added : 'We bought him to play regularly and of course , that is the target for him . His English is not perfect yet . Yes , he understands more than he talks . 'He has shown that he is a defender who is committed , focused and can integrate well in our defensive style . Overall his first game was a very positive one . ' Mertesacker struggled against Monaco in the Champions League defeat last week . The French boss also gave updates on Aaron Ramsey and Francis Coquelin , with both in contention to play on Wednesday night . Ramsey has n't played since the beginning of February , while Coquelin was forced off against Everton after suffering a broken nose . The French midfielder would need a face mask if he were to play against Chris Ramsey 's relegation candidates . Aaron Ramsey has not played for the Gunners since their clash against Leicester in early February . This clash of heads left Francis Coquelin with blood gushing out of his nose against Everton . Arsenal midfielder Coquelin broke his nose after two knocks to the face on Sunday against Everton .
Gabriel made Arsenal debut in 2-0 victory against Everton on Sunday . Vice-captain Per Mertesacker dropped to the bench and Arsene Wenger says he can not be guaranteed a place back in the team . Arsenal travel to play QPR at Loftus Road on Wednesday night . Gunners currently occupy third place in the Premier League table . Arsene Wenger 's side beat Everton 2-0 at the Emirates Stadium on Sunday . Aaron Ramsey back in the squad while Francis Coquelin could feature . Jack Wilshere still recovering after minor ankle operation . CLICK HERE for all the latest Arsenal news .