Manchester United winger Nani is confident he can make a quick recovery after dislocating his shoulder against Chelsea in the Community Shield.
Nani was expected to miss the start of the new Premier League season after suffering the injury during the second half of Sunday's contentious encounter at Wembley.
The Portugal international was hurt as he fell to the ground following a challenge by John Terry after he had earlier fired United ahead.
United boss Sir Alex Ferguson suggested Nani could face several weeks on the sidelines and he is due to undergo a scan on Monday.
However, Nani feels he could be involved in Portugal's friendly in Liechtenstein on Wednesday after linking up with his national team.
"I think I can recover in time," said Nani. "We'll see how it turns out."
He added: "It's painful and it needs treatment.
"It's not a very serious injury. I need to take care of it and I expect to get better in the coming days."