The Sox defensively probably aren't to be as good as last year however they still should be above average.
What they need is hitting.
On paper Morel hits better than the second coming of Jose Lopez (i.e. Angel Sanchez). His defense is good enough to probably play short as a back up / utility role for the amount of time he might actually get there.
His bat is better. If it comes down to those two, Morel offers more in what the team need more of.