Barefoot is irrelevant, since they play in shoes, so he's more like 6'11''. Throw in his 7'4'' wingspan and bounce and his size isn't an issue. His strength or lack thereof might be in certain match-ups though.
There's very few 7 footers, even in shoes. Gasol is the rare barefoot one.
They still need depth. The vast majority focus on the rotation, as if only 9 or 10 players play throughout a season, especially on this team.
Even if they're not necessarily in the rotation full time, they desperately need a power forward that's good enough to be, for a myriad of reasons. 1) If Aldridge/Gasol are injured or give a game off. 2) If the match-ups don't allow for Anderson to get by playing power forward. 3) If Simmons/Bertans aren't good enough to be in the rotation.
For all the obvious reasons, I'll believe this report when I see it.