With a year's worth of contract left, the Jays asked for compensation, and Saturday, there were rumors that it would be a player who played in the major leagues for Boston in 2012.
According to Alex Speier of WEEI in Boston, that rumor is true:
However, an industry source has informed WEEI.com’s Rob Bradford that the Red Sox will send infielder Mike Aviles to the Blue Jays. The Red Sox will receive a player or cash in return, as Major League Baseball rules require that a trade involving one player moving to a team involve either cash or a player going to the other party to the trade.
Aviles, who will turn 32 in March, was Boston's regular shortstop for most of 2012, hitting .250/.282/.381 in 136 games with 13 home runs and 60 RBI, the latter two figures career highs. So Farrell will be in search for, among other things, a new shortstop for the Red Sox in 2013.