I feel bad for Willson. What a nice, sincere, motivated, hard-working, committed guy, who has worked so hard at his craft and as a team leader. "Offensive-minded" is not literally true; his "mind" and his effort have very much been defensively oriented. He's worked so hard at being as good a catcher as he could be: in improving his framing, and working with pitchers, and game-calling, etc.. If he's not perceived as ideal, I don't think it's for any lack of effort or will or good-intention.
After giving so much to become as good a catcher as possible, it would be sad if the Cubs and the league all say "we don't want you." And if after all the minor league years of effort, and 6+ years of big-league effort, he finally hits free agency and nobody wants him.