Marcelo Bielsa had been linked with the job.
The 21-year-old Ecuador international has excelled this season to help Brighton to sixth in the Premier League.
The German described the 3-0 defeat earlier this month as the worst performance of his managerial career as his side were run ragged by the more dynamic and incisive hosts. A couple of days later we played Wolves and we looked a different team, I said it looked like two completely different sports.