Bayern Munich midfielder Mitchell Weiser on Tuesday apologised for posting pictures of himself and team-mate David Alaba in skimpy underwear on a social media site.

"I'm young, I make mistakes, I'll learn from it. Now concentrate on the important things!" he wrote on his official Twitter account.

The 20-year-old Weiser only broke into the first-team in January having made his Bayern debut last season.

But he caused a ruckus on social media networks by posting a picture of him and Austria international Alaba posing in tiny underwear on Instragam as part of the trending hashtag "#photoiwouldneverpost".

The Germany Under-20 international deleted the post after the picture went viral before apologising.