To get a certain player to take more shots? Like have a player take 40 or so shots?
yes, well not sure that he will take 40 shots, but you can have a player take many shots, more then now...
either buy or train all other players in passing, and make sure you don't use players with good jumpshot or inside shot abilities.
+
train the guy who needs to take the shots in jumpshot and keep his passing low.
this is a very bad tactic, but it's a way of getting what you asked for...
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