Mario Mandzukic is being monitored by Manchester United and Arsenal after Bayern Munich confirmed that Robert Lewandowski will join the club at the end of the season. Mandzukic has scored 12 goals in 21 games for Bayern this season, but has seen his long-term future in Munich under threat from Lewandowski. Lewandowski's arrival could see the Croatian limited to appearances off the bench next season, with Pep Guardiola also comfortable playing without a striker. And Mandzukic's situation is being monitored by David Moyes and Arsene Wenger, although any move will have to wait until the summer. The 27-year-old has also been linked with Juventus, but Moyes' previous interest in the striker while manager at Everton could be revived. Reports have also claimed that Mandzukic is on Wenger's shortlist, although Bayern chairman Karl-Heinz Rummenigge insists the German heavyweights are not considering a sale.