The 36-year-old midfielder previously played for the Canadian side in 2014 and 2015.
The Vancouver Whitecaps announced Monday that veteran midfielder Mauro Rosales has re-joined the club one a one-year contract, with a team option for 2018.
Rosales, 36, previously played for the Whitecaps from Aug. 2014 through the end of the 2015 MLS season. He has also had stints with FC Dallas, Chivas USA and the Seattle Sounders, along with stops in his native Argentina at Newell's Old Boys and River Plate. In addition, Rosales played for Dutch giant Ajax from 2004 to 2007.
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"Mauro is a senior player who brings tremendous leadership and commitment to our locker room, someone who can connect with players while still playing with them," Whitecaps head coach Carl Robinson said in a statement.