head is off now, liner in cylinder 4 is loose, is that a new block or what is it worth attempting a repair thanks

Hi, My 04 freelander 1.8 had its head gasket replaced by a main dealer two years ago, the car has since done another 20,000 miles Yesterday we tried to start it after it sitting idle for 2 weeks. It transpires cylinder 4 is ( was hydrolocked). I haven't seen the car yet. This seems like...