He could be 40 who cares. He can still do the business. That's all that matters.
I know.
But some people say that VPersie or Mandzukic are not good enough to be the 4th option here anymore.
But suddenly a probably 40-years old Eto'o is good enough.
Eto'o is one my favorite Barca's player ever.
But more or less, he is without a serious top flight football since Anzhi and 2011 (except a season at Chelsea).
I would personally rather have an older, experienced benchwarmer Cf who played tons of goals in his career, who is willing to be a sub here.
But who also clearly has less than 38-40 years.
With those extremely old players (Etoo), you never know.
They can always get a horrible injury (more easily than younger players), their healing takes much longer and their stamina or key skills can for unknown reason deteriorate in a few weeks.