It has been a hugely encouraging start to the summer for Everton fans when it comes to the transfer window with the club bringing in as many as three players through the door.
Iliman Ndiaye, Tim Iroegbunam and Jesper Lindstrom have all been brought to bolster Sean Dyche's squad.
However, the Toffees are far from done, as they are now on the verge of securing their fourth signing, a defender, according to reports.
As reported by transfer expert Fabrizio Romano, Everton have struck an agreement with Lyon to acquire the services of defender Jake O'Brien,
The Merseyside club are currently negotiating personal terms with the 23-year-old Irishman, with a medical for the player scheduled on Sunday should personal terms be agreed.
Despite joining Lyon just a year ago from Crystal Palace for a measly £1 million ($1.3m), O'Brien has made a name for himself in Ligue 1, making 27 appearances and finding the back of the net on four occasions.
His impressive aerial prowess and towering presence are expected to complement Sean Dyche's robust playing style perfectly.
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With uncertainty surrounding the future of Jarrad Branthwaite, who has been the subject of interest from Manchester United, the Toffees have moved swiftly to plug the gap in their defensive ranks.
The club remains adamant about their lofty valuation of Branthwaite, refusing to budge from their £70 million-plus (over $90m) asking price.