wine-lover's heart is not in the cup (idiom); a drinker not really interested in alcohol; having an ulterior motive; to have other things in mind; with an ax to grind; accomplishing something besides what one set out to do
The truth is that I was staying with some friends in the neighbourhood and went to the funeral just for the ride, hoping to glimpse some members of the Academic Francaise.
Southampton's priorities also lie elsewhere - they are chasing promotion from League One as they attempt to recapture their former glories, having been a top-flight team themselves just six years ago.