Justin Timberlake, who is currently touring Europe as part of his 20/202 Experience World Tour, was supposedly invited to the the Crystal Cologne club in Germany to enjoy free cocktails by the club’s owner, Yunus Arslan. Timberlake and his friends partied until 4 a.m. and to show his gratitude, the former boy bander left the staff a $3,920 tip. Arslan said that Justin “was in a great mood, a real gentleman.”