We've got another fantastic prize to give away - a brand-new Arsenal shirt signed by our new Spanish midfielder!

Santi Cazorla joined the Club on Tuesday and was pictured in his new colours during a photoshoot at the training ground.

Before he left London Colney the 27-year-old signed a home shirt and this is how YOU could win it:

Using the hashtag #WelcomeCazorla, tweet your welcome message for Arsenal's new signing before 5pm (UK time) on Wednesday, August 8.

Copyright 2014 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source 7 Aug 2012