Complex sentence: He rejoined Southend on a month's loan on 21 August 2008 and on 26 January 2009 he joined Swindon Town on a one month loan which, after six games, was extended for a further month.
Split into simpler sentences: He rejoined Southend on a month's loan on 21 August. On 26 January he joined Swindon Town on a one month loan which, after six games, was extended for a further month.