Simplify the following text for a Grade 9 native English-speaking person.
Original: Previous to this the club had been sponsored by Zoom Airlines , who were part-owned by club director John Boyle , and who retained advertising space on both the Davie Cooper Stand and the South Stand until they ceased trading in August 2008 .
Simplified: They replaced Zoom Airlines , who 're owned by club director John Boyle , and who still advertise on both the Davie Cooper Stand and the South Stand .