Definitely, you own their contracts now and there is no one else that can make a claim of doing so.
Thus, yeah, you can do whatever you want.
Legacy of the London Dynamo
Season 30 - Sapling 8.
Promotions (first season in new league):
Season 31 - Oak 5.
Season 32 - Iron 4.
Season 34 - Steel 3.
Season 37 - Bronze 2.
Season 38 - Silver.
Season 41 - Gold.
Season 44 - Honour.
Season 48 - Club World Cup 1st Place.
Highest Honour Placement(s):
Season 44 - 5th.
Isle of Man Hood, Gillingham Giants, London Asswinders, London Ravens, Exeter Patronum, Dudley Dursleys...
London Inquisitors (RIP, S24 - S40).