The foreign channel covering spirits at The Centre is spooky (8)
I believe the answer is:
eldritch
'is spooky' is the definition.
(I've seen this in another clue)
'the foreign channel covering spirits at the centre' is the wordplay.
'the foreign' becomes 'el' ('the' in Spanish).
'channel' becomes 'ditch' (a small channel or trench in the ground).
'covering spirits' becomes 'r' (I can't justify this - if you can you should believe this answer much more).
'at the centre' indicates putting letters inside.
'ditch' going around 'r' is 'dritch'.
'el'+'dritch'='ELDRITCH'
Can you help me to learn more?
(Other definitions for eldritch that I've seen before include "Weird, sinister, ghostly" , "Weird Scots" , "Spooky" , "Weird Scottish" .)