SINGAPORE - Singapore Polytechnic students had the opportunity to catch former Manchester United player Park Ji Sung in action at the school campus on Tuesday morning.

The South Korean, who is now an ambassador for the club, is in town as part of haircare brand Clear's promotional efforts.

Along with representatives from the company, as well as a team of SP students, Park participated in a series of football challenges, including running over acupressure mats to score a goal.

When asked which player his former club should look to sign next season, the 35-year-old, who retired from professional football in 2014, said without hesitation: "Cristiano Ronaldo."

On the topic of hair, he also shared his thoughts his former team-mates' hairstyles. He picked Patrice Evra as the one with the best hairstyle, while Anderson da Silva had the honours of worst locks.

Park will be attending a similar promotional event at Cathay Cineleisure Orchard at 4pm on Tuesday, before flying off at night.