49ers: Bubble-watch roster projections amid training camp

49ers training camp: Bubble-watch projections for San Francisco’s roster

SANTA CLARA, CA - AUGUST 7: Jarryd Hayne #38 of the San Francisco 49ers stretches during a San Francisco 49ers practice session at Levi's Stadium on August 7, 2015 in Santa Clara, California. Hayne formerly played professional rugby league in Australia for the Parramatta Eels. (Photo by Lachlan Cunningham/Getty Images) /

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BATON ROUGE, LA – OCTOBER 15: Nick Mullens #9 of the Southern Miss Golden Eagles drops back to pass against the LSU Tigers during the first quarter at Tiger Stadium on October 15, 2016 in Baton Rouge, Louisiana. (Photo by Sean Gardner/Getty Images) /

Players with No Chance

OL John Flynn
OL Richard Levy
OL Andrew Lauderdale
FB Tyler McCloskey
QB Nick Mullens
K Nick Rose

The 49ers have a number of concerns along their offensive line this season, although someone like veteran guard Zane Beadles — capable of playing all three positions — might take away the need to add depth here.

All three of the Niners’ O-line candidates here are undrafted free agents, diminishing their chances to make the roster exponentially.

As in the case with John Flynn, this video from Jennifer Lee Chan of Niners Nation provides almost everything you need to know:

Fullback Tyler McCloskey might see some reps during the preseason, as San Francisco looks to keep presumed starter Kyle Juszczyk healthy and rested. But that’s it.

Neither quarterback Nick Mullens nor kicker Nick Rose have duties with the Niners outside of exhibition.