Swansea have agreed to sell Jonjo Shelvey to Newcastle for a fee in the region of £12m.
And the 23-year-old England international midfielder is having his medical in Newcastle today.
Magpies boss Steve McClaren is keen to strengthen his team, who are currently in the Premier League drop zone after an inconsistent start to his reign.
And, if the deal goes through, Shelvey will become Newcastle's second signing in quick succession, following the arrival of Henri Saivet from Bordeaux on Monday.
Shelvey has been capped six times by England and has played almost 80 times for Swansea.
However, having been a key figure for the Swans last season, he has not been guaranteed a starting berth this term.
Swans boss Alan Curtis said after Sunday's FA Cup defeat at Oxford that Shelvey still had a part to play at the club.
But Curtis added: "He wants first team football. It is a big season, coming up into the Euros.
"We can't quite guarantee him first team football at the moment."
Having played at youth team level for Arsenal and West Ham, Shelvey moved on to Charlton, where he made his breakthrough at senior level in 2008.
He became the club's youngest-ever senior goal scorer when he was on target against Norwich, 54 days before turning 17, and moved on to Liverpool in May 2010.
Shelvey made almost 50 appearances during his spell with the Reds but struggled for regular starts and joined the Swans on a four-year deal in the summer of 2013.
He made his England debut in 2012 and has been a regular this season, starting their final three Euro 2016 qualifiers and coming off the bench in the November friendlies against Spain and France.