West Ham have signed Argentinian midfielder Manuel Lanzini, club co-chairman David Gold has announced.
Former River Plate and Fluminense player Lanzini, 22, joins from United Arab Emirates club Al Jazira.
Gold wrote on Twitter: "Manuel Lanzini an attacking midfielder has today signed for West Ham United. He's nicknamed 'the jewel'."
Middlesbrough are close to bringing former England midfielder Stewart Downing back to the Riverside Stadium from West Ham.
Press Association Sport understands that no fee has yet been agreed between the clubs, but that discussions have progressed and there is an appetite to do a deal, meaning the 30-year-old could be on his way to Teesside within days.
Downing has been left out of the Hammers squad for their Europa League clash with Birkirkara on Thursday evening.
Boro have been in talks with the Hammers for some time over their former Academy graduate, who left the club for Aston Villa in a £12million switch in July 2009.
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West Ham United co-chairman David Gold has confirmed the clubs are trying to bring defender Carl Jenkinson back to the club.
The England Under-21 right-back spent last season on loan at Upton Park, with Gold hoping he can agree a deal with Arsenal for his services.
Gold told talkSPORT: "We are very working hard to try and get Carl back here."
Former West Ham left-back Julian Dicks has joined the club as coach, the club has confirmed.
Dicks, who spent last season managing the club's ladies team, will be working under his former team-mate, Slaven Bilic, at Upton Park.
To be joining the first-team coaching staff at my club is fantastic news for me. I was with the Ladies last year and I thoroughly enjoyed that, but to get the opportunity to work with Slaven, his coaching staff and the first-team players is a dream come true.
This is a Premier League club with some very good players already in the squad and some more very good players set to come in this summer. It is exciting times for me and exciting times for West Ham.
I met up with Slaven last week and, although we had not met in person for a few years, it was like we had never been apart. We had a hug and a kiss and sat down and talked all about West Ham and all about football.
We had a great relationship when we played together in the same team here and I am sure we will work well together again as manager and coach.
West Ham's Europa League adventure will start with a tie against FC Lusitans of Andorra.
West Ham say they are still hopeful of completing a permanent deal for loanee Alex Song.
The Cameroonian midfielder spent last season at Upton Park on loan from Barcelona.
Co-chairman David Sullivan has stated the club will do everything it can to keep Song in East London for the long term.
"I can assure you we have not given up on Alex Song yet. Before Christmas Alex was outstanding and if we believe we can get him back to that sort of form and maybe with a new manager we can, we would very much like Alex to come," Sullivan said.
"We are very thin on the ground with midfielders. You do get injuries and you need back-up. We have got Europe and other games that we want to win.
"There was not enough competition for places last season and this year we don't want the same again. If the players have a bad game they will have to fight for their position back."
Former West Ham boss Harry Redknapp has backed the club's new manager, Slaven Bilic, to succeed at Upton Park.Read the full story ›
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West Ham United have announced that the club's former defender Slaven Bilic has replaced Sam Allardyce as their new manager.Read the full story ›