Expert answers to your questions in World Football: The Phone-in from BBC Radio 5 Live's Up All Night programme.
http://www.bbc.co.uk/programmes/p02p9f7d
North and South America
Tim Vickery and Jon Arnold answer your questions, including, are the two new Celtic signings from the USA 'tough enough' for the Scottish Premiership? Also, what was football like in Colombia and Mexico during the period of the strong drug cartels?