Born: 1 May 1994, Luton, England
Former clubs: Waterford United
Was an unused substitute in the Hammers' 5-0 FA Cup with Budweiser third round defeat at Nottingham Forest on 4 January 2014.
Before West Ham United:
Maguire, who was born in Luton but grew up in the town of Castlecomer in County Kilkenny, first came to prominence when he scored a hat-trick for the Kilkenny & District League in the Youth All-Ireland final against Cork in 2011.
Following those goalscoring exploits, he was signed by Waterford United, for whom he made his first-team debut just two months past his 17th birthday in July 2011. Maguire was latterly rewarded with an 18-month contract.
Though he netted just once in 2011, Maguire came of age the following year, scoring four times across three successive league games in June.
That form saw him earn international recognition, as he made his Republic of Ireland Under-19 debut - two weeks before he bagged his first senior hat-trick in a 4-2 win over Longford Town.
The 5"9 frontman ended the campaign with 13 goals in 24 appearances, form which fired Waterford to the promotion play-offs. Following a successful trial, Maguire put pen to paper on a two-and-a-half year deal at the Boleyn Ground on Boxing Day 2012.
Maguire has one international cap to his name, having represented the Republic of Ireland at U19 level. He made his debut in a 1-1 friendly draw in Lativa in September 2012.