The Hammers legend believes the deal for the Argentine shows the club's ever-increasing ambition and ability to attract top-quality players.
West Ham United legend Sir Trevor Brooking has hailed the club's permanent signing of Argentine midfielder Manuel Lanzini and believes it shows the club's ability to attract quality players, as quoted by the Daily Mail.
The Hammers confirmed on Tuesday that they had sealed a deal worth £9 million to make the loan signing of the 23-year-old midfielder from UAE club Al-Jazira permanent after an impressive first season in England.
The former River Plate man has contributed six goals in 22 appearances for the London club this season after arriving in July, and the club have acted with two months of the season still to play to tie down the future of the player for the next four years.
Brooking, who played nearly 650 times in 17 years with the Hammers, believes that move shows the increased ambition and attraction of the club after a fine season.
The 67-year-old said, as quoted by the Daily Mail: "It's great. I was asking the two Daves [co-chairmen Gold and Sullivan] if they had sorted Lanzini out just a couple of weeks ago.
"He was outstanding until he got injured earlier this season. Then he came back and he and Dimitri Payet together are great. It's good to sort him, Payet and [Cheikhou] Kouyate out for the next few years.
'People can say what's to stop big clubs still coming in for them, but if I was a player on the platform that they are given at West Ham, a club where the fans enjoy watching you and now with the new stadium, it's a great opportunity for them and anyone else who comes in. With three or four new players, the right sort of people, I think they can be very dangerous next year."
The Irons' superb first season under the management of Slaven Bilic has seen them competing to qualify for the Champions League for the first time in their history.
The club are currently sitting in fifth place in the Premier League table in an guaranteed Europa League spot, but are just a point behind faltering Manchester City in the race for a place in the top four.
Saturday's 2-2 draw with Chelsea, in which they came within a few minutes of beating their London rivals at Stamford Bridge, was the latest result in a long run of impressive form which has seen the Hammers lose just two of their last 17 Premier League matches since mid-November.