I bought a player this week. he droped from 7 to 5, played 84 min the week and went back to 7 on friday. Seems to me like the GS Hit ends after the first TU at the new team??
I think that's more lucky than anything else with that many minutes. Plus you'll have to see if he has trouble getting above 7 the next couple of weeks to see if there are any last effects of the GS hit.
My guy from the opening post dropped from 7 to 5 on the transfer and bounced back to 6 after playing 75 mins last week.