|Full name||Arnau Caldentey Riera|
|Date of birth||1 October 1981|
|Place of birth||Manacor, Spain|
|Height||1.74 m (5 ft 8 1⁄2 in)|
|1999–2001||→ Ferriolense (loan)|
|2001||→ Mataró (loan)|
|2006–2007||→ Southend United (loan)||2||(0)|
|2007–2008||→ Falkirk (loan)||19||(1)|
|2008–2009||→ Falkirk (loan)||17||(0)|
|* Senior club appearances and goals counted for the domestic league only and correct as of 30 June 2012.
† Appearances (Goals).
Riera was born in Manacor, Mallorca. He played for Real Mallorca's youth team aged 18 and played for Balearic Island selection U17 when they were champions of Spain. Aged 18, he moved to Mataro (on loan from Mallorca) in Spain's Second Division B. A year later he moved to FC Barcelona B where he was an ever present in the side which won the league in 2001. He stayed with Barca 'B' until 2006 and trained with first team in Peralada in 2004. He was Lionel Messi's captain for the 2004–05 and 2005–06 seasons.
On 10 August 2006 Riera signed for Sunderland, and made his debut in the 3–1 defeat to Southend United at Roots Hall on 19 August 2006. He played well in his debut game, but was sent off just three minutes into the following match, a League Cup match against Bury which Sunderland lost 2–0 at Gigg Lane. And although signed to Sunderland for three more years, he never played for them again.
Whilst signed to Sunderland, Riera joined Southend United on a month's loan, the team against which he made his Sunderland debut. He also joined Scottish Premier League side Falkirk on a season-long loan, on 17 July 2007. He joined Blackpool for a week's trial in July 2008, which he left prematurely. Riera eventually rejoined Falkirk on another season-long loan.
He was finally released by Sunderland on 28 May 2009.
- "Black Cats sign Barca midfielder". BBC Sport. 10 August 2006. Retrieved 18 August 2007.
- "Southend clinch Riera loan deal". BBC Sport. 23 November 2006. Retrieved 18 August 2007.
- "Bairns sign up Spanish midfielder". BBC Sport. 17 July 2007. Archived from the original on 12 August 2007. Retrieved 18 August 2007.
- "Blackpool bring in Arnau on trial". BBC Sport. 8 July 2008. Retrieved 23 July 2008.
- "Arnau ends Blackpool trial early". BBC Sport. 10 July 2008. Retrieved 23 July 2008.
- "Riera passed fit to rejoin Bairns". BBC Sport. 19 July 2008. Retrieved 23 July 2008.
- Setanta Sports (28 May 2009). "Sunderland announce major clear-out". Archived from the original on 31 May 2009. Retrieved 28 May 2009.[dead link]