Arsenal are on a sensational seven-game winning streak, with a three-point cushion over Spurs in fourth. However, a warning has been sounded from within the club by midfielder Mikael Aretea. Arteta, who scored in their 3-0 win over Aston Villa, insists there must be no let-up. He said: \"If anyone thinks it\'s all done now, then they are making a big mistake. \"We can\'t take our foot off the pedal now. \"We have won seven in a row now, which is very difficult in the Premier League nowadays, and we have done it well, playing some high-tempo football, but there are some tough, tough games coming up in our last eight matches.\" He added: \"When you are winning, life is good and you can see that the fans are enjoying it at the moment. \"They deserve it as well because they were behind us when things weren\'t going right. \"Hopefully we can finish the season strongly because we have a group of players and staff who really mean business.\" Laurent Koscielny looks likely to return for the the London derby with QPR on Saturday.