Spencer remained at the club despite relegation in 2007
Former All Black fly-half Carlos Spencer is leaving Northampton Saints, BBC Radio Northampton understands.
The 33-year-old is believed to be frustrated with his lack of first-team opportunities at Franklin's Gardens.
Spencer has lost the Saints number 10 shirt to rugby league convert Stephen Myler this season and has only started eight games out of a possible 21.
He has a year left on his contract but an agreement appears to have been made for him to leave.
The New Zealander joined the club in 2005 but was recently reduced to playing for the Saints second team in a friendly against Henley Hawks on 19 January.
He was then left out of the Saints European Challenge Cup tie against Toulon five days later.
The fly-half, who played 35 times for his country scoring 291 points, is probably the Saints's biggest ever signing and remained at the club despite relegation to National One in 2007.
It is thought Spencer will join another Guinness Premiership club despite offers to play his rugby in France.