Arsene Wenger has chosen Martin Keown 's confrontation with Ruud van Nistelrooy as his most memorable moment in Arsenal 's rivalry with Manchester United - and admitted he does n't know where his FA Cup-winners medals are . Arsenal and United have had plenty of heated battles with Wenger referencing the infamous 'Battle of Old Trafford ' incident as the one that stands out . Speaking to Sportsmail columnist Keown on BBC Radio 5 Live , Wenger recalled the defender 's confrontation with Van Nistelrooy following the United striker 's penalty miss in September 2003 . Martin Keown confronts Ruud van Nistelrooy following the United striker 's missed penalty in September 2003 . Keown screams at Van Nistelrooy following his last-minute spot kick miss during the 'Battle of Old Trafford ' Arsene Wenger told Keown that the incident was his most memorable from Arsenal 's encounters with United . 'The most memorable ? You were involved in it , ' Wenger said jokingly to Keown . 'Of course that famous incident with the penalty with Van Nistelrooy . ' As Arsenal gear up for their FA Cup sixth round tie against Manchester United next Monday , Wenger insists he is as hungry as ever for success . Arsenal and United have enjoyed an intense rivalry in the cup down the years and are only separated by a point in the Barclays Premier League . Ahead of Monday 's clash , Wenger admitted he did n't know where his FA Cup medals from previous successes were . 'Medals , I do n't even know where there are , ' said Wenger . 'That tells you that I do n't look back . The human side of the game is more important to me as opposed to the medals . ' I prefer a box of memories . In this job , you have a big influence in people 's lives , they have a big influence in your life as well . 'At the top top level , these are special people - that remains longer with you than the medal , it 's not the only thing that matters . 'You want to think you can have a positive influence on people lives , the club and the style of play . ' Arsenal manager Arsene Wenger oversees training at the club 's base in Colney on Monday . Wenger will attempt to outwit United manager Louis van Gaal , who has been criticised recently , but the Frenchman reserved special praise for the Dutchman . ' I think he 's a great manager , ' said Wenger . 'If you look at what he 's done in his career , its incredible . He 's stabilised the club . They 've only lost two in 18 games . The job is more demanding now . Every game now is a trial where you judged before and after . ' Arsenal 's intense rivalry with United was defined for years by Wenger 's clashes with Sir Alex Ferguson . ' I 'm much happier to see him now than before , ' Wenger added . 'In the end , it became more peaceful and respectful . He was not always objective defending his time , nor was I . 'Today , we are happy to have a good dinner or good glass of wine and just talk about football . ' Mathieu Flamini ( left ) and Olivier Giroud celebrate with the FA Cup following Arsenal 's 3-2 victory against Hull . Wenger admits that he and former United boss Sir Alex Ferguson ( above ) get on far better these days .
Arsenal face Manchester United in the FA Cup following Arsenal 's sixth round on Monday . Arsene Wenger admits he does n't know where his FA Cup medals are . Wenger cites Martin Keown 's confrontation with Ruud van Nistelrooy in the 'Battle of Old Trafford ' as his most memorable moment from the rivaly .