If you go on live match centre for a game you should see the option to buy a match pass for the Bradford game, for those it's not available for it offers you a month pass instead - Matches - Coventry City
I believe iFollow can show any game that isn't already on TV or isn't a Saturday 3pm game (although apparently this doesn't apply during international breaks, so Saturday's game was available too)
I have a block 20 season ticket as well as an ifollow season pass. You can watch all city games as long as they are not live on sky. When I was ill last season I watched both home and away matches.