Born in Mont-de-Marsan, Larrieu started his career in his native France at Montpellier, but finding it impossible to dislodge the experienced French international Bruno Martini, he decided to move on.

Following a six-month break he was recommended to Plymouth Argyle's manager, Paul Sturrock and was signed on a one-month trial contract, making his debut on 6 December, in the Football League Trophy versus Bristol City.

Having been signed as a back-up keeper, he played 14 league games following injury to regular goalkeeper Jon Sheffield and despite obvious rustiness and nerves he was rewarded with a permanent contract.

Plymouth became champions of Division Three (now League 2) with Larrieu conceding only 28 goals, keeping 27 clean-sheets (a club record) and pulling off many a fine save.

Argyle won promotion from Division 2 (now League 1) that season, and in 2004–05 he shared goalkeeping duties with Luke McCormick in the Championship.

[6] On 5 May 2012, Larrieu announced that the club's final match of the 2011–12 campaign against Cheltenham Town would be his last as a Plymouth Argyle player, allowing him to concentrate on his coaching duties.

In January 2014 Larrieu signed for South West Peninsula League club Camelford as cover for their regular 'keeper who was due to be unavailable for a short period.

[10] In September 2011, Larrieu was appointed first team player-coach to caretaker manager Carl Fletcher following the dismissal of Peter Reid on a temporary basis.