On the 35th anniversary on its release it has been brought up on Superdeluxeedition once again and someone mentioned this version that has been completely unknown to me and - I`m sure - to most as well.
https://www.discogs.com/Wham-Careless-W ... se/7963088
Instrumental version - the so-called "Sound Shower Mix" on the Japanese only rare promo 12" released in 1984.
I am writing this on a slim chance that someone here might have a copy or a decent rip they would like to share.....