for a soccer player i would only want to put on lean mass and not so much strength. Drugs like test and deca would cause you to retain water weight which you would not want.
EQ, Winny, and Anavar are all good choices however some might not agree because of the joint issues. Anavar would be the best choice, you could gain 20 pounds off of var in 2 cycles if you eat and train correctly.
what club are you considering playing for?