Troublemaker with the Spanish force (5)
I believe the answer is:
impel
'force' is the definition.
(I know that force can be written as impel)
'troublemaker with the spanish' is the wordplay.
'troublemaker' becomes 'imp' (little devil).
'with' means one lot of letters go next to another.
'the spanish' becomes 'el' ('the' in Spanish).
'imp'+'el'='IMPEL'
(Other definitions for impel that I've seen before include "Urge forward, drive" , "Oblige" , "Make" , "Egg" , "Spur on" .)