Park Ji-sung claims it will be hard for Arsenal to sustain a title challenge this season due to their inexperience.
The Manchester United midfielder believes Arsene Wenger's side will struggle to maintain their good form due to the number of young players at the club.
The Gunners travel to Old Trafford on Monday night, live on Sky Sports 1 & HD 1 in the hope of ending United's unbeaten record this season.
However, the South Korea skipper feels question marks will remain until the Gunners prove they can cope.
He said: "Arsenal have shown they are a good side.
"They have a lot of young players but they have played very well this season and they do have more experience than last season.
"But we have a lot of it and that is one of the most important things in the title race.
"Arsenal are doing well now but maybe in March, when the pressure comes on and the games begin at the end of the season, you will end up with different results."
Park is positive that the Red Devils' winning run will continue against Arsenal who have gone five games without a win in head-to-head meetings includes four defeats.
"Our good performances against Arsenal will continue," he said.
"It is good to have that winning mood. We have produced some good performances recently, against Blackburn and Valencia.
"We can do that against Arsenal as well."
Meanwhile, Dimitar Berbatov is hoping to continue where he left off after scoring five goals in their seven-goal mauling of Blackburn last time out.
"I feel good," he not surprisingly told MUTV.
"We are playing well. Not only me but the team as well.
"We are one point short of Arsenal but we have played one game fewer.
"It is an important game for both teams. Maybe we have a slight advantage because we are playing at home but Arsenal are playing very good football this season.
"I have been watching them all the time and I really admire the way they keep the ball. It is going to be interesting."