Arsene Wenger is confident Park Chu-young will win over the sceptics following a slow start to his Arsenal career.
The South Korean striker joined the Gunners from Monaco before the close of the transfer window, but has featured only once to date.
His sole appearance came in last month's Carling Cup victory over Shrewsbury Town and he has been an unused substitute for Arsenal's past three Premier League games.
Park is expected to start Tuesday's Carling Cup tie against Bolton Wanderers and Wenger believes the 26-year-old will eventually be a success in English football.
"Some players like (Robert) Pires and (Thierry) Henry took four, five, six months and they became exceptional players," said Wenger.
"Park arrived two months ago so that's normal.
"Some people judged our players very quickly in a negative way and slowly they changed their mind through their performances.
"I prefer it that way round than the other. Some players make you jump off your seat in the early stages and then disappoint you after.
"These players will win over all the sceptical people and Park is one of them.
"It is hard in the Premier League but Park is a player with quality and intelligence.
"In the longer term that will always come out and I am confident he will do that in the Premier League as well."