One holds hands eventually with model (5)
I believe the answer is:
ideal
'model' is the definition.
(ideal can mean model or perfect)
'one holds hands eventually' is the wordplay.
'one' becomes 'i' (Roman numeral).
'holds hands eventually' becomes 'deal' (I can't justify this - if you can you should give a lot more credence to this answer).
'i'+'deal'='IDEAL'
'with' acts as a link.
Can you help me to learn more?
(Other definitions for ideal that I've seen before include "highly desirable" , "In her dreams" , "faultless" , "Best possible" , "principle to be aimed at" .)