March 16 (Reuters) - Private equity firm Advent

International is in advanced talks to buy Canadian payments

processor Nuvei ( NVEI ), a source familiar with the matter

told Reuters on Saturday.

A deal between the parties could be announced soon, said

the source, who asked not to be named because the discussions

are confidential.

The Wall Street Journal first reported about the potential

deal.

Advent declined to comment. Nuvie did not immediately

respond to Reuters request for comment.