In the absence of Willo, I found this on Wikipedia:

In the Premier League, players on loan are not permitted to play against the team which holds their registration (section 7.2 of rule M.6). Loanees are, however, allowed to play against their 'owning' clubs in cup competitions, unless they are cup-tied (i.e. have played for their owning club in that cup during that season).

It would seem, therefore, that Conor could play for us in the final should Chelsea be fortunate enough to make it through.

Dad and I watched games standing on the muddy slope of the Holmesdale Road end. He cheered and I rattled.