Complex sentence: His career was revived by a loan spell at Dumbarton in 2006 and he then became a prolific goalscorer for Queen of the South, who he joined in 2007, scoring 47 goals in 83 league appearances plus seven cup goals.
Split into simpler sentences: His career was revived by a loan spell at Dumbarton in 2006. He then became a prolific striker for Queen of the South scoring 47 goals in 83 league appearances plus seven cup goals.