David O'Leary says Arsene Wenger's Arsenal team need to turn promise into trophies.The former Gunners captain told TalkSport: "(They're) fantastic to watch. I love coming and watching them but I think this season is very important because I think they want to win something."It's important they win something this year, it's been so long. I think for everybody connected with the club, outside the club."They have been labelled now as four years since they won anything, which is a long time for this club and those four years they've played fantastic football but it would be lovely, and I think it is important, that they turn it into a bit of success this season."