Brown will go straight into Saturday’s Emirates FA Cup squad for Chelmsford to face Basingstoke.
The pacy 18-year-old joined West Ham from Arsenal in 2013, scoring seven goals in the 2013/14 campaign for the Hammers’ Under-18s. He then moved into the club’s Development Squad where he netted three times.
The youngster signed a new contract earlier this year keeping him at the club until June 2016. He told the club’s website “I’m delighted to have signed a new contract. I’m happy the club has faith in me to give me another year to push on and try and prove myself.I heard I was going to get a new contract in about January or February and I was very happy. I’ve known about it for a while but it’s good to actually sign it.”