Miquel, who joined from UD Cornella in summer 2008, signed the contract on Friday at London Colney having turned 17 four days previously.
Ignasi Miquel signs Arsenal pro deal
Support Tribal Football with this great deal from our partners ExpressVPN. You get an extra three months free with the 12-month plan (a saving of 49%!). All plans come with a 30-day money-back guarantee if you change your mind. Click here to try now, risk-free for 30 days - and support Tribal Football in the process.
Video of the day: