Gyokeres new clause that was said to have activated a few days back also had some interesting benefits to the player's agent, and a disadvantage to the club when they refuse to take a particular offer from other clubs, but I haven't confirmed if that clause is effective.
Yes, Viktor Gyökeres' release clause has been activated, previously Sporting planned not to let Viktor Gyökeres go. But, there are some changes. Previously, Sporting had rejected an offer for
GykeresGyokeres of €60 million
, but some stated that it's because of miss-verbal understanding. and they release the
caluseclause €100 million release clause
baedbased on the new news
, but with some condition like what stated here:

Source: New Viktor Gyokeres transfer clause activated
The Swede has a €100 million (£86.5 million, $117.6 million) release clause, which if triggered automatically entitles him to leave without Sporting being able to stop him.
But friction between Gyökeres and his club has arisen over suggestions that he feels betrayed by their refusal to accept a fee as low as €60 million (£51.9 million, $70.6 million), amid claims there was a verbal understanding between the parties put in place last summer.
Source: Viktor Gyokeres transfer clause