Everton have only made one signing so far this summer with James Tarkowski joining the squad, and now a new update has emerged from a reliable source on a transfer target.

What's the latest?

Italian journalist and transfer insider Fabrizio Romano has revealed a new update on Everton transfer target Kalidou Koulibaly.

Romano tweeted this morning:

"Chelsea are prepared to submit the final, official bid for Kalidou Koulibaly: €38m plus add-ons, up to €40m package. Napoli could accept, after opening proposal worth €35m turned down.

"Koulibaly agreed personal terms - while Chelsea are also working on Nathan Aké."

Everton have been linked with a move for the defender for over a year now, and even submitted a bid for the £32m player last summer.

Supporters will be gutted

It is no secret that Everton have been struggling, something that became painfully obvious for supporters over last season when the side endured a Premier League relegation scrap, only surviving in the penultimate game of the season.

There is a desperate need for reinforcements and players who can make a high-quality impact in the team, so Everton supporters will surely be gutted that they are about to miss out on the signing of a long-term transfer target in Koulibaly.

The Napoli centre-back has been a key player in the Serie A for this side and has proven he has the ability and talent to be a fantastic addition to any team.

Over 27 league appearances, Koulibaly scored three goals, delivered three assists and created two big chances. From a defensive standpoint, he was incredibly impressive, making 1.4 tackles, 1.1 interceptions and 3.1 clearances per game, as well as winning the majority of his duels (61%).

The defender's eye-catching defensive and attacking qualities would have been massively advantageous to Frank Lampard who is looking for ways to improve his side to ensure they don't find themselves in a battle at the bottom of the table again, so it will surely be frustrating for the manager that Koulibaly will make a move to another club.

With that being said, Farhad Moshiri will need to learn a lesson from missing out on Koulibaly this summer and start to commit to making serious offers for transfer targets to avoid losing out on another player that could make a great impact on the team next term.

AND in other news: Lampard eyeing Everton deal for £20m “bundle of energy”, he can be Yakubu 2.0