From ESPN's John Clayton:
Jones looked lost running routes early last season. I kept waiting for Nelson to move ahead of him, but then Nelson had a knee injury, and later a shoulder injury, and it never happened. Meanwhile Jones got better as the season went on. First he had his only 100 yard game at Tampa in week 9, and finished the season with at least 3 receptions in 5 of the last 8 games.
I've been expecting Nelson to win the job for almost a year. Do you have a preference? Maybe these two are interchangeable right now.