There are several factors to consider and questions to answer:
*What position do you play?
*What kind of shape are you in right now?
If you haven't trained for a few months, then obviously you're going to need to establish some base conditioning firstly. Once this is established, or if you're already at this point, then you're ready to train for the game. In essence, you'll be training for lactate tolerance, speed, and efficiency.
In addition to rep and interval work, I suggest that you incorporate some tempo runs to further augment your "stamina" and lactate tolerance.
Your sprints can be composed of various distances. The longest that you'll ever sprint at one time is maybe 50-60 yds, depending on your position. Therefore, sprint those distances.
Generally, a track athlete would strive for 10-20 minutes at race pace when running intervals or doing reps. So, let's say that a Miler could run his best mile in 4:00. Well, that athlete would run 400m sprints at race pace (i.e. 1:00) followed by active rest for 1:00 to 1:30. In all, he'd complete 10 of these "sets" to get 10 minutes at race pace.
The "reps" are actually run above race pace, and these are what most of us do when doing HIIT or intervals. The rest interval would have to be longer (i.e. 2-3 times the duration), as a more complete recovery is used here for speed and efficiency purposes.
The "tempo" runs are run at an intensity above lactate threshold (i.e. 86-88% VO2max for trained endurance athletes) and are used for the purpose of lactate tolerance.
Obviously, these different routines would not be performed on the same day, and you should generally go with a hard/easy format. The easy days could be days off or days of reduced intensity.