Two Europeans having couple of pints inside run out to see match (6)
I believe the answer is:
equate
'match' is the definition.
(thesaurus)
'two europeans having couple of pints inside' is the subsidiary indication.
'two europeans' means two substitutions for 'european'.
'european' becomes 'e' (abbreviation e.g. EU).
'european' becomes 'e' (abbreviation e.g. EU).
'having' means one lot of letters goes inside another.
'couple of pints inside' becomes 'quat' (I can't justify this - if you can you should believe this answer much more).
'e'+'e'='ee'
'ee' enclosing 'quat' is 'equate'.
'run out to see' is the link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for equate that I've seen before include "Match" , "Correspond" , "Consider (one thing) as equal (to another)" , "Regard as equal" , "Regard (two things) as the same" .)