Tottenham have become favourites to sign the 17-year old after it was revealed Liverpool had ended their interest.
When asked by Goal, if he was confident Sessegnon could play in the Premier League, Sigurdsson replied: "One hundred per cent (he can play in the Premier League)"
"He's a great talent, he just turned 17 and he played more than half of the games this season, he scored a lot of goals.
"He has a very bright future. I'm just surprised he didn't get any offers during the season. I think he was that good. There's no surprise there (in reported interest)."