Related Clues:

• Converted split
• Show leniency toward
• Misfit, does not blend into group
• Lean and treat mercifully
• This tyre around the middle is fat
• Atypical or unconventional person
• Extra item just in case
• This tyre is for emergencies
• Seems that 17 across just isn't in it, so one won't have a fit, perhaps
• Not even he is not in it
• Don't kill it; you may need it for a change
• He is not even the one that's just not in it
• It's not even he that's not in with the rest
• Not even he will fit in
• Just in case it's too lean