Based on vs depending on

Here is some context:

A manager for a national football team will pick players that play for their club regularly. Rarely do they select players who don’t play for their club a lot.

One manager selects a player who rarely plays for his club. His reasoning: they less you play, the less tired you are, hence you play better during the World Cup.

The logical reasoning/reason is : if you don’t play, you won’t play as well as someone who plays often.

How would you naturally write the following :

Each manager’s reasoning is based/depends on/has to do with/is according to his decisions (to either select player who are less tired or less trained.)

Which is correct

reasoning or reason :

The logical reasoning/reason is

Thanks