Jose Mourinho is finalising a move to Manchester United but an unlikely potential sticking point has emerged over the trademark of his name.
The Portuguese's full name was registered with the Intellectual Property Office by Chelsea on both occasions he managed at Stamford Bridge - and United's Premier League rivals still hold those rights.
Quickly understanding Mourinho's power in English football, Chelsea first filed for it in March 2005 in response to his explosive first season, and then immediately after he replaced Rafa Benitez three years ago.
The latest trademark does not need renewing until 2023 and United's lawyers are understood to be working through annulling the agreement.
Chelsea also trademarked his signature in 2006, but that ran out in January this year - less than a month after his sacking.