Where he will impress: Stills has good hands and can make adjustments during routes. He's also willing to throw downfield blocks, and has shown the ability to play both inside and outside receiver positions.
Where he will underwhelm: He's dropped some easy catches throughout his career and sometimes seemed skittish running routes across the middle of the field. His size and speed are lacking.
What he can gain at combine: Stills needs a strong overall combine performance to jump up from his current mid-round status.