Swansea City signed the Hull striker on loan at the end of the 2006/07 season and he responded with five goals in as many starts.

It prompted the club to make a permanent bid for the former Scottish Under-21 and B international during the summer of 2007.

After weeks of negotiations, Swansea finally got their man on July 9 on a three-year deal that cost £200,000 that could rise to £300,000 depending on team and individual success.

Glasgow-born Duffy signed for Hull from Falkirk in January 2006 for £250,000, but was restricted mainly to the substitutes bench and a loan spell at Hartlepool.

He started his career at Scottish giants Rangers as a 14-year-old and came through the ranks to make three substitute appearances - including a Champions League game against Panathinaikos - before joining Falkirk in 2004 where he netted an impressive 27 goals in 55 starts.