Cohort help

[Shinigami21XX]

I'm playing a halfling Bard and I just hit level 7, I didnt see any other feats to take so I took leadership. My main goal is to gain an ally who is useful in most cases. my party consists of 8 players;
Me - bard (sound striker)
3 fighters (one of which also took leadership)
a sorcerer (has just about all item creation feats)
a ranger
a druid
and a fighter/rogue/assassin
I dont know wether my dm is going to let me build the cohort or just choose a class/profession
what would my best options be?

[dartagnan4]

A straight class Cleric (focusing on healing) it helps the DM and the rest of the players and is the most likely class that the other players to agree to give this cohort a partial share of the loot so your primary guy does not have to split his resources so much.

[Snow_Tiger]

So it seems u have a lot of glass canons? The Druid should have battle field control covered, and sorcerer might as well.i like the support idea.

[EsperMagic]

Definitely a healbot/buffer at this point. Perhaps a cleric of sarenrae or a life oracle? You could go crazy with an Oradin though.