Victor, old player from United, runs into friend (6)
I believe the answer is:
mature
'victor old player' is the definition.
I can't judge whether this definition defines the answer.
'united runs into friend' is the wordplay.
'united' becomes 'U' (abbreviation).
'runs' becomes 'r' (cricket abbreviation).
'into' is an insertion indicator.
'friend' becomes 'mate' (mate is a kind of friend).
'u'+'r'='ur'
'ur' placed inside 'mate' is 'MATURE'.
'from' acts as a link.
Can you help me to learn more?
(Other definitions for mature that I've seen before include "Fully developed physically" , "Age" , "Grow older" , "Ripe or fully grown" , "due to be paid" .)