JACOB MURPHY will be confirmed as Newcastle United’s third summer signing within the next 24 hours after Norwich City finally accepted an improved £12.5m offer for the winger.

Murphy flew into Newcastle’s training base at Carton House, near Dublin, yesterday evening after he was given permission to leave Norwich’s pre-season training camp in Germany.

He will undergo a medical and finalise personal terms this morning, with Newcastle manager Rafael Benitez keen to push through the transfer as quickly as possible after he broke his summer silence yesterday afternoon to urge Magpies owner Mike Ashley to live up to his promise of financial support.

Those words appeared to have an immediate impact, as within two or three hours of Benitez speaking to the press, news emerged that Norwich had finally caved in and reached an agreement for Murphy’s departure.

Having turned down Newcastle’s initial £8m bid at the start of the month, the Norwich hierarchy had steadfastly stuck to their initial valuation of the 22-year-old, even though it became clear that Murphy wanted to leave Carrow Road in order to move to Tyneside.

Newcastle managing director Lee Charnley made a number of unsuccessful attempts to engineer an agreement, but his persistence was finally rewarded yesterday when the Norwich board agreed to sell.

Newcastle are understood to be paying an initial fee of around £10m, with a further £2.5m of potential add-ons that are dependent on Murphy’s performances in a Newcastle shirt.

A boyhood Newcastle fan despite being raised in North London, Murphy is a product of Norwich’s academy and leaves Norfolk having made 42 senior appearances for the Canaries.

He has spent time on loan at six different clubs, but broke through impressively last season, scoring in both of Norwich’s Championship matches against Newcastle. He was also one of England’s most effective performers at the recent European Under-21 Championships in Poland.

He will become Newcastle’s third summer signing provided there are no hitches with his medical, following Christian Atsu, who signed permanently from Chelsea, and Florian Lejeune, who moved to Tyneside from Eibar.

His arrival will help placate Benitez, with the Newcastle manager having become increasingly frustrated at the club’s lack of success in the transfer market in the last few weeks.

Benitez has watched Newcastle fail to land a succession of targets, with the likes of Willy Caballero, Lucas Leiva and Tammy Abraham all having headed elsewhere despite having been lined up for a move to St James’ Park.

The general lack of progress remains a major issue with the opening weekend of the Premier League season now less than four weeks away, and while Benitez was careful not to be too critical of those above him when he spoke at Newcastle’s training base in Ireland, his unhappiness was not hard to gauge.

When Benitez agreed to remain in his position at the end of last season, Ashley promised him “every last penny that the club generates through promotion, player sales and other means in order to build for next season”.

That was widely interpreted as a commitment to spend at least £80m this summer, and while Murphy’s arrival will take Newcastle’s net summer spend to around £16m, Benitez will still be unhappy that so many of his targets have slipped through the net.

“We are working very hard, and trying to get as close as possible to some signings,” said the Newcastle boss, speaking before the news of Murphy’s impending arrival broke.

“When I had the meeting with Mike Ashley, I was confident that after that meeting, we have the money available and the wages. Everything is in place to move forward. Hopefully, Mike can keep his word and we can do what we want to do.”

As well as looking to make additions, Benitez is also keen to freshen up his squad by moving some players on. Adam Armstrong has joined Championship side Bolton Wanderers on a loan deal that will run until January, while the absence of Tim Krul, Achraf Lazaar and Emmanuel Riviere from the group that travelled to Ireland suggests it will not be too long before they are also heading through the exit door.

“We are delighted to bring in Adam,” said Bolton manager Phil Parkinson. “He’s a good young player with great potential, and we are looking forward to working with him.”

Despite having spent last season away from Newcastle on loan, Siem de Jong and Henri Saivet are part of the group that are training at Carton House, and Benitez claims they could still have future with the Magpies.

“Everybody wants to impress, and that’s how it should be at the start of pre-season,” he said. “You know the players already, but if they come back and want to impress, you want to consider them even more.”

Meanwhile, Yoan Gouffran has completed his move to Turkish side Goztepe after leaving Newcastle as a free agent earlier this summer. Gouffran was offered a new one-year deal on Tyneside, but has opted to sign a long-term contract in Turkey.