heres the program I use and I have added strength and size through out my 4 years at college. Each phase is 4 weeks long
Phase 1
Mon- Heavy & Thurs Active Recovery (Use lighter weight) Take final set to failure
3 x 6 high pull
3 x 10 bench
3 x 10 db incline
3 x 10 db shoulder press
3 x 10 shrugs
3 x 10 upright row
3 x 10 tricep pushdown/dips
Tues-Heavy & Fri-active recovery
3 x 10 squat
3 x 10 stif leg deadlift
3 x 10 lat pulldown
3 x 10 cable row
3 x 10 biceps/ 2 exercises
3 x 10 calves raises
Phase 2
Mon-Heavy & Thurs-active recovery
Hang clean 4x4
Becnh 4 x 6
Incline DB 3 x 6
DB Shoulder Press 4 x 6
Power Shrugs 3 x 6
Triceps 3x 6
Tues-Heavy Fri- Active recovery
Partner Hamstrings 3 x 3
Squat 4 x 6
Stiff leg Deadlifts 4 x 6
Lat Pulldown 4 x 6
Cable row 4 x 6
Standing Barbell Curls 3 x 6
Calves 3x 10
Phase 3 is same worjout only do bench and squat fot sets of 4,3,2,2 and cleans for 4 x 2
It is a solid football lifting program and should imrove your strength