The second transfer window of 2012 closes on Friday when clubs across the globe have a final opportunity to strengthen their squads before the deadline arrives. FIFA.com will bring you extensive coverage of all the transfers on this page as soon as they happen. We\'ll begin things at 09.30 BST with a live text commentary which will run through to 00.00 BST on Saturday. Our aim will be to bring you every bit of transfer news, including the confirmed deals and breaking stories from the FIFA\'s global editorial network. You can also follow us on twitter @FIFAcom 09.45 BST - Aston Villa have had a bid accepted for USA international Clint Dempsey. 09.30 BST - The biggest news overnight is that West Ham United signed Andy Carroll on loan. The Hammers manager Sam Allardyce said: \"Andy was pleased to choose us ahead of a number of other clubs and I\'m glad to say we\'ve got a top quality player for West Ham. I first tried a long time ago and it didn\'t look like happening but I\'m glad it has.\" QPR have signed Esteban Granero from Real Madrid, while Southampton have signed Japan defender Maya Yoshida who starred at the Olympics. There have also been big deals done in Germany with Javi Martinez\'s €40m move from Athletic Bilbao to Bayern Munich, or the capture of Dutch strikers Luuk de Jong (€15m, Twente to Borussia Mönchengladbach) and Bas Dost (€6.5m, Heerenveen to Wolfsburg). FIFA