Let's turn it around. Keeper slides in with his hands, gets there first but in the same action takes the striker out?
Keepers are a protected species.
Keepers are allowed to go to ground without consequence if he touches the ball first. Seems rule doesn't apply to outfield players.
I can understand it given either way.
It's all in the LOTG, boys and girls
A direct free kick is awarded if a player commits any of the following offences against an opponent in a manner considered by the referee to be careless, reckless or using excessive force:
charges
jumps at
kicks or attempts to kick
pushes
strikes or attempts to strike (including head-butt)
tackles or challenges
trips or attempts to trip
If an offence involves contact it is penalised by a direct free kick or penalty kick.
Careless is when a player shows a lack of attention or consideration when making a challenge or acts without precaution. No disciplinary sanction is needed Reckless is when a player acts with disregard to the danger to, or consequences for, an opponent and must be cautioned
Using excessive force is when a player exceeds the necessary use of force and/or endangers the safety of an opponent and must be sent off