The cover band I work with regularly wanted me to sequence "Hella Good" by No Doubt but the drummer didn't want to have to deal with putting on headphones to monitor a click track. So I prepared a sequence with a strong hihat count on each beat. It starts with a 1 bar 4 count and continues through the entire song. Because the hihat just blends in with the drummers playing no one else notices it but the drummer who has a monitor right next to him can hear it and it keeps him locked into the sequence. He doubles the hihat most of the time so it covers the fact the click is audible. Personally I'd prefer he uses a click in headphones he is more comfortable in doing it like this. It just means you need a strong monitor signal that he can hear while playing.