NASHVILLE, Tenn. — Look for Tennessee wide receiver Carnell Tate during practice, and the rookie can be found kneeling or standing next to veteran Calvin Ridley, listening intently. Tate is Tennessee’s future and arguably Cam Ward’s top target already with the preseason opener Thursday night at San Francisco. Going into his eighth season at 31, Ridley said he likes living in Nashville and working with a talented, young group of receivers in Tennessee. Selecting a wide receiver with its top pick was an obvious choice for Tennessee, even with the free agent signing of Wan’Dale Robinson. Ward said he expects such catches out of the rookie based on the crazy plays he’s already seen in his work with Tate.