Poor side in Peru wanting new playmaker (9)
I believe the answer is:
euripides
'playmaker' is the definition.
(I've seen this before)
'poor side in peru wanting new' is the wordplay.
'poor' indicates an anagram.
'wanting' indicates named letters should be taken away (to want something can mean to lack it or need it).
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'side'+'in'+'peru'='sideinperu'
'sideinperu' with 'n' taken away is 'sideiperu'.
'sideiperu' anagrammed gives 'EURIPIDES'.
(Other definitions for euripides that I've seen before include "playmaker" , "old playwright" , "Classical playwright (Alcestis, Electra, etc)" , "Athenian playwright" , "Ancient Greek dramatist" .)