After scoring twelve goals for Manchester United reserves, he was sent on a one month loan to Swansea City on 24 October, 2003 where he scored one goal in a Football League Trophy defeat to Southend United.
Nardiello spent the second half of the 2003-04 season on loan to Barnsley. He made his debut for the Tykes on 27 January, 2004 scoring two goals as they beat Blackpool 3-0 at home. He scored seven goals in 16 games during his loan spell at the club before returning to Old Trafford. Having become a firm favourite with the Barnsley fans, he returned again to Oakwell on a season long loan for the 2004-05 season. Dogged with injuries Nardiello still managed to play in 30 games, scoring seven goals.
In January 2008, Nardiello returned to Barnsley on loan, the club he left in the summer of 2007. He signed a loan deal with Barnsley until the end of the 2008 season. After scoring just one goal in thirteen appearances he returned to QPR in May 2008.
After being injured shortly after coming on in a pre-season friendly at Tranmere Rovers, Nardiello made his league debut for the club on 13 September when he came on as a second half substitute as Blackpool beat his former club Barnsley 1-0 at Bloomfield Road.
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