Everton forward Richarlison hopes to help repay the club for their faith in him.
The Toffees forked out £40m to sign the Brazilian from Watford this summer. He has started the season well, scoring three goals in as many Premier League appearances and earning his first Brazil call-up this weekend.
"I hope to really honour this shirt and bring joy to the Everton fans," Richarlison said. "I went after my objectives, I worked hard to get here and now it's time to aim high and achieve great things with Everton.
"There is a great atmosphere at Goodison Park. The fans drive the team on against the opposition. I could feel how they get behind the players, it spurs you on to score, to help your teammates and keep running for the team.
"It's exciting to be here as Everton have a lot of top players. I'll grow here together with my teammates and give my best every day to become a great player."