The Hammers appointed former England international Chris Woods on Tuesday and he becomes the first coach installed as part of Slaven Bilic's new regime in East London.
The pair were teammates back in their Everton days but have never worked together in a coaching team.
The 55-year-old, who won 43 caps for his country between 1985-1993, has plenty of experience in the Premier League, having worked at Everton and Manchester United over the last two decades.
But it is his work with two players who have gone from zeroes to heroes in the Premier League and on the international stage, that stands out most.
Evertonian and journalist Simon Hart has followed Woods' career closely and told West Ham's official website why it is a great move by the Hammers.
"He’s seen how players can develop within the right structures and Tim Howard is a case in point," Hart said.
"He (Howard) probably arrived at Everton with his confidence maybe a little damaged by what happened at Manchester United, and developed into one of the Premier League’s best goalkeepers with Chris Woods playing an integral part in that."
Hart also pointed out that Woods must have impressed both Howard and other respected coaches in the game as he was then brought in by Jurgen Klinsmann as the USA's 'keeper coach too.
He added: "Jurgen Klinsmann, who as a German must have worked with some pretty good goalkeepers in his time, must respect what he can bring.
"So, not only does Chris bring Premier League experience, but World Cup experience too, from that American team who got to the last 16 in Brazil last summer."
Woods has also been crucial in turning Manchester United's De Gea from a 'keeper full of promise but low on confidence into someone who is widely regarded as one of the best 'keepers in world football.
De Gea, who has been named the Red Devils' Player of the Year two seasons running, hailed the impact Woods had made on his career back in 2013, as quoted by the Daily Mail.
And the Spaniard has not looked back since, his Man of the Match performances at Old Trafford generating serious interest from the likes of Real Madrid.
Woods himself is delighted to be part of a new era at the Boleyn, where the Hammers will play for the final time this season before their big move to the Olympic Stadium.
"I used to enjoy playing at the Boleyn Ground – especially in a night game under the lights."
Woods played over 600 games for nine different clubs in a career spanning more than two decades.
At West Ham, Woods will be working with cult hero Adrian, a player he also has high hopes for.
Woods added: "I saw Adrian in action last season and I will be hoping to bring something to his game and the other 'keepers at the club."