Old Pope in Spain might have links to Seville perhaps (10)
I believe the answer is:
clementine
'might have links to seville perhaps' is the definition.
I can't tell whether this definition defines the answer.
'old pope in spain' is the wordplay.
'old pope' becomes 'clement' (I can't justify this - if you can you should believe this answer much more).
'spain' becomes 'e' (abbreviation for Espana).
'clement'+'in'+'e'='CLEMENTINE'
Can you help me to learn more?
(Other definitions for clementine that I've seen before include "suits citrus production" , "juicy type" , "my darling girl?" , "Unwell" , "Forty-niner's daughter; Mrs W. S. Churchill" .)