 Complete the following phrase:  After signing a pre-contract deal in July 2009 to join Dundee United in January 2010, Dušan made his debut in the January 2010 20 Scottish Cup win against Partick Thistle, also keeping a clean sheet on his league debut four days later. Perniš kissed silver for the first time on 15 May 2010, when he kept a clean sheet in the 