Sunderland have completed the signing of Paraguay international Cristian Riveros on a three-year deal from Mexican club Cruz Azul.
After finally sealing a deal for the midfielder, Bruce said: "We have been monitoring Cristian for a while now, so I'm delighted to have concluded a deal which will bring him to Sunderland and the Barclays Premier League.
"He is a very creative midfielder and a player that will enhance our attacking options from wide positions for next season.''
The 27-year-old, who was a free agent after his contract with Crul Azul expired, will link up with compatriot Paulo Da Silva at the Stadium of Light.
Riveros said: "Sunderland have shown trust in me as a person and as a footballer. The history here is good and I'm delighted to be joining the club."
The versatile midfielder, who can play on the left or in a central role, has won 45 international caps for Paraguay.