Reinstating roles

i have a charcater whom i was goin gto move from my own corp to another, but that never happened, now when i try to give him the corp roles that he had it says he is not accepting roles, how can i give him back the roles?

Iirc when a character removes their own roles in prep for leaving a corp, they then have to ‘allow roles’ again. I think the button for allowing roles is in the same place.