Same trouble with underground (5)
I believe the answer is:
Here is my best explanation:
'underground' is the definition.
('metro' can be a synonym of 'underground')
'same trouble with' is the wordplay.
'with' indicates the answer is hidden within the clue.
'METRO' can be found hidden inside 'same trouble'.
(Other definitions for metro that I've seen before include "Paris subway", "The Paris Underground transport system", "Transport system", "French underground", "Parisian underground railway", "Parisian underground system", "Underground rail system", "The underground railway system in Paris", "Parisian rail system" and "Paris underground rail system".)