Complex sentence: He has been loaned out by AC Milan for the 2007-08 in order to gain some first team experience, with Siena, he was loaned to Sporting Clube de Portugal in January, 2008.
Split into simpler sentences: He has been loaned out by AC Milan for the 2007-08 in order to gain some first team experience, with Siena. He was loaned to Sporting Clube de Portugal in January, 2008.