Complex sentence: On 9 February 2011, it was announced that Blackman had joined an unnamed league club on trial, while the following October he had a trial with Scottish Premier League side Celtic, playing his first match in a year in a bounce game with Rangers.
Split into simpler sentences: On 9 February 2011, it was announced that Blackman had joined an unnamed league club on trial. In October 2011 he had a trial with Scottish Premier League side Celtic, playing his first match in a year in a bounce game with Rangers.