Brentford had rejected two previous offers from Newcastle, but Wissa publicly confirmed he wanted to leave the club, accusing them of standing in his way of a move away. He has made 149 senior appearances for Brentford, scoring 49 goals, and has been linked to Newcastle all season.
Wissa, who turns 29 later this week, finished last season with 19 Premier League goals, just four fewer than Alexander Isak, who is also expected to make a big move to Liverpool. The two deals are part of Newcastle's plan to strengthen their attack.
