Titans coach Ken Whisenhunt believes Bishop Sankey adding weight will help him in pass protection and as a finisher of runs.
The Titans want Bishop Sankey to put on additional weight.
Titans GM Ruston Webster said the team will likely pick up a running back on Day 3 of the NFL Draft.
NFL Films' Greg Cosell believes Bishop Sankey would be "well down the list" in this year's draft-eligible running back class.
The Nashville Tennessean's Jim Wyatt believes it's "too early" to call 2014 second-round pick Bishop Sankey a bust, but conceded Sankey was "underwhelming" as a rookie.
Bishop Sankey rushed four times for 18 yards in Sunday's Week 17 loss to the Colts.
Titans RBs coach Sylvester Croom said Bishop Sankey "does a pretty good job physically pass-blocking, but has been inconsistent with "assignments and recognizing defenses."
Bishop Sankey rushed 14 times for 44 yards in the Titans' Week 16 loss to the Jaguars.
Coach Ken Whisenhunt said Bishop Sankey is not in the doghouse despite getting out-touched 17-4 by Shonn Greene in Week 15.
Bishop Sankey rushed three times for eight yards and caught one pass for 18 yards Week 15 against the Jets.
Bishop Sankey rushed for 25 yards on nine carries in the Titans' Week 14 loss to the Giants.
Bishop Sankey managed 42 yards on ten carries in the Titans' Week 13 loss to the Texans.
Bishop Sankey suffered a stinger in the Titans' Week 12 loss to Philadelphia.
Bishop Sankey rushed 10 times for 37 yards and caught two passes for 14 yards in Sunday's Week 12 loss at Philadelphia.