It's bothersome because it shows a lack of planning. Y wait till the closing of the transfer window to get rid of him, thereby eliminating any chance of bringing in a replacement?
It's foolish any way you spin it, as now were left with only Grosso as cover, who I imagine isn't anywhere near match fitness since he has been MIA all summer. Given DC's history of injuries, it's a disaster waiting to happen.
It's bad enough we didn't bring in a cb to challenge the average Bonucci. Now we have done the same thing on the left.