Ideas - well try it, and if you find it doesn't match, it's easy enough to have an ACL ACE match TCP port 1494 (might be able to also do that with a custom NBAR rule [assuming such is still supported]) as part of a class-map.
What would be difficult would be if you further needed to use NBAR Citrix matching to match against a Citrix traffic sub-type (assuming Citrix still has those and also assuming NBAR Citrix can still match against that attribute too).