Sunderland winger James McClean has said he still has much to prove to boss Martin O'Neill, despite a lively debut in last Sunday's win against Blackburn.
The 22-year-old came off the bench to make his first appearance for the Black Cats since completing a move from Derry City in August.
"It's only one game, I'm taking nothing for granted and I'll keep working hard," McClean told BBC Newcastle.
"I'll try to improve and if the manager calls me I want to repay his faith."
McClean, who has pledged his international future to the Republic of Ireland despite being called up by Northern Ireland under former boss Nigel Worthington, arrived on Wearside having scored 18 goals in 73 games for Derry.
"I've been ready for it my whole life," he added.
"I was more nervous making my debut for Derry City in front of 3,000 than I was here.
"I came over here with the mindset that I'm going to work hard, try to improve and get into the team.
"I knew it wouldn't happen straight away and I had to work hard, try to impress the manager and I seems to have done."
You can hear the full interview with James McClean in the build-up to Sunderland's trip to Tottenham Hotspur with BBC Newcastle on Sunday, 18 December from 14:00.