Complex sentence: Jonkers'career at Knowsley Road fizzled out in 2004 however, mainly through injury, Jonkers' found it tough to gain his place back in the team and subsequently joined Salford City Reds on loan, before completing a permanent deal in 2005.
Split into simpler sentences: Jonkers' career at Knowsley Road fizzled out in 2004 mainly due to injury. Jonkers found it tough to gain his place back in the team and subsequently joined Salford City Reds on loan, before completing a permanent deal in 2005.