Spurs face Fiorentina in the second leg of their last-32 clash at White Hart Lane on Thursday evening with a crucial away goal to their name after a 1-1 draw in Italy last week.
The former Germany international, who played 55 times for Spurs between 2001 and 2004, said before the second leg that he believes Mauricio Pochettino's side have the strength to go all the way in Europe's secondary competition.
He told talkSPORT: "Tottenham are having a fantastic season so far.
"I am really happy about the way they play. In the Europa League you have to have a bit of luck, but I think they are strong enough [to win it]."
Spurs take a slender advantage into the return fixture after a second-half equaliser cancelled out Nacer Chadli's penalty on the night.
However, that strike from the Belgian handed Pochettino's side a potentially crucial away goal, which means that the North London club would progress with a 0-0 draw in front of their own fans.
Tottenham have not won a trophy since 2008, when they were victorious in the League Cup, and have not progressed beyond the quarter-final stage of a European tournament since winning the Europa League's previous incarnation, the UEFA Cup, in 1984.
They will have to face Fiorentina without two key players in top goalscorer Harry Kane and midfielder Mousa Dembele, although they are expected to welcome back goalkeeper Hugo Lloris and winger Erik Lamela.