Old Scottish side admitting wild riot in showers (10)

I believe the answer is:

exhibitors

'showers' is the definition.
(I know this)

'old scottish side admitting wild riot' is the wordplay.
'old' becomes 'ex' (prefix meaning former or onetime).
'scottish side' becomes 'hibs' (Hibernian football club).
'admitting' indicates putting letters inside (admit can mean to welcome in or accept).
'wild' indicates an anagram.
'riot' anagrammed gives 'itor'.
'hibs' enclosing 'itor' is 'hibitors'.
'ex'+'hibitors'='EXHIBITORS'

'in' is the link.

I've seen this clue in The Guardian.

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