We've got a fantastic prize to give away - a brand-new Arsenal shirt signed by our brand-new striker!
Olivier Giroud agreed a move to Emirates Stadium this week and was pictured in his Arsenal colours during a photoshoot at the training ground.
Before he left London Colney the France international signed a home shirt and this is how YOU could win it:
Using the hashtag #WelcomeOlivier, tweet your welcome message for Arsenal's new signing before 5pm (UK time) on Wednesday, June 27.
Please note, this competition has now closed.
