guǎn tā ne
don’t worry about (it, him etc)
doesn’t matter; whatever; anyway
管
guǎn
variant of 管[guan3]
他
tā
(third-person singular) (since the early 20th century, usu. male) he; him; his
呢
ne
particle indicating that a previously asked question is to be applied to the preceding word ("What about ...?", "And ...?")