After seeing Sevilla defeat PSV by 4 goals in the Europa league, my confidence in Sevilla was raised so the sack was unexpected, probably he was sacked for not doing so well in the La Liga. I hope the new manager will be able to improve the team especially to defeat Manchester United in the Europa league match up.
Sevilla's management was seeing the result in europa league as not as important in la liga. Sevilla may possibly go back again to the relegation zone. That was making the management feel worried about that. going to the relegation zone is much scarier for the management compared with playing in the europa league. Sevilla will be facing manchester united but i guess that if sampaoli got so many bad results in la liga. That was making the management was losing their patience with him. That's why he has been sacked by the management after losing against getafe.
You will have another chance to play in europa league in the future but once you will be relegated and that will be so difficult to go back again into la liga. It's better for sevilla not play in the europa league next season rather than be relegated to the lower division.
That's what im thinking about the main reason why sevilla was sacking him. It will better for management to make sure if the club still stays in the la liga for upcoming season.