According to the news released by reporter Ross Harwood on Twitter, although Isaac has proposed to Newcastle to transfer, he is likely to be unable to make a move.
Isaac and Newcastle's contract expires in 2028. He played 42 for Newcastle in the 24-25 season, with 27 goals and 6 assists. Isaac is now valued at 120 million euros in the transfer market.
Originally, Liverpool was the most promising team to sign Isaac, but they have finalized Ekitic. Manchester United also needs to introduce a new striker at the moment, but considering the required transfer fees, it is very difficult for them to sign Isaac. Judging from the current situation, if Isaac wants to transfer, his most viable next choice may no longer be in the Premier League.