Mookie Betts probably is the Boston Red Sox’s biggest question this season.

Betts is entering his final year of arbitration and the deadline is fast approaching. After taking home $20 million last season, the 27-year-old appears poised to break Nolan Arenado’s arbitration record of $26 million this season.

The deadline for Major League Baseball teams to submit their salary figures for arbitration-eligible players is Jan. 10.

For more the right fielder, check out the “Need to Know” video above from “NESN After Hours,” presented by People’s United Bank.