Grimes is not overly quick. This, as well as possible fragility, could be one of the reasons he slid to 14 in the draft. He lacks the raw pace to run around opponents, which is one of the key ingredients of a successful sweeper.
Last season, before he got injured, the opposition pushed up on him, but instead of beating them with footwork, he tried to hit teammates with precision kicks under pressure, many of which sprayed wide.
That said, Grimes' key asset is his ability to play body-to-body football. Keeps his feet, courageous, good tackler, instinctively knows what to do in a contest. Under a new coach whose core philosophy appears to be just those physical aspects, Grimes could thrive, as long as his fitness holds up.