who should i have a a goal keeper

[eaert]

i didnt understand the second thing you said but i know that the rate not so important because if u will put anther goal keeper that he is better he will get same rate or better (can be worth but most times it's good means he didnt touch the ball haha)

[X101]

What's the go on using goal keepers outside of goal when you have a high number of injured players, does it incur a possession penalty?

[Tactician]

What's the go on using goal keepers outside of goal when you have a high number of injured players, does it incur a possession penalty?

I can't confirm about the possession penalty, but almost sure the other team is going to beat you if he has more or less the same quality.
So, do not play a GK as an outfield player and surely do not play an outfield player in GK position. If you have a lot of injuries, get at least temporary players for the required positions from the transfer market. If you have little amount of money, look for the 'free' ones.