Spanish man returns on Thursday with toilets (7)
I believe the answer is:
thrones
'toilets' is the definition.
('throne' can be a synonym of 'toilet')
'spanish man returns on thursday' is the wordplay.
'spanish man' becomes 'senor' (I've seen this before).
'returns' says the letters should be written backwards.
'on' says to put letters next to each other.
'thursday' becomes 'th' ('Th' can be a synonym of 'thursday').
'senor' reversed gives 'rones'.
'rones' after 'th' is 'THRONES'.
'with' acts as a link.
(Another definition for thrones that I've seen is " Seats for royalty".)