Walker announced his official retirement from the NBA on Tuesday, Adrian Wojnarowski of ESPN reports.
Walker signed a contract with AS Monaco Basket of the EuroLeague on Friday.
The Mavericks are waiving Walker on Friday, Tim MacMahon of ESPN.com reports.
Walker (knee) is available to play in Tuesday's game versus the Knicks.
Walker (knee) has been upgraded from questionable to probable for Tuesday's game against the Knicks.
Walker (knee) is questionable for Tuesday's matchup with the Knicks.
Walker (knee) is out for Sunday's game against the Lakers.
Walker is out for Friday's game against the Rockets due to left knee injury recovery.
Walker delivered 14 points (3-9 FG, 1-6 3Pt, 7-7 FT), three assists and two rebounds across 24 minutes off the bench in Monday's 116-106 loss at Minnesota.
Walker isn't starting Monday's game against the Timberwolves.