If this season really is Jacoby Ellsbury’s last call with the Red Sox, his impending free agency and the arrival of top prospect Jackie Bradley Jr. looming like an unstoppable freight train, he can use the next six months to set a few things straight.

Start with the notion that he’ll never be as good as he was in 2011.

“I know what I can do,” Ellsbury said yesterday, “and I think (2011) is just a taste of what I can do.”

So far, though, Ellsbury’s 2011 season has been like the cherry atop an otherwise unfulfilling sundae. He achieved career-high offensive numbers, won a Gold Glove and was runner-up to Detroit Tigers ace Justin Verlander in the AL MVP race.

Ellsbury even exceeded his own expectations. Each spring, he jots his statistical goals on a sheet of paper. And although the guarded center fielder keeps those objectives private, he finally admits “there were some I had to rearrange at the midpoint of the season.”

The rest of Ellsbury’s six-year major league career has paled by comparison. He did hit .291 and lead the majors with 120 stolen bases from 2008-09, but freak injuries also sidelined him for all but 18 games in 2010 and another 79 games last year.