The forward made just 10 starts last season after moving from Hibernian but still weighed in with seven goals.

His continued struggle to convince Gordon Strachan of his right to a first-team place caused much debate among Hoops fans, who booed the Celtic manager's decision to take him off in the Scottish Cup semi-final win over St Johnstone.

But the 24-year-old hopes his appearance in the last three games signifies an upturn in fortunes.

He came off the bench in the Champions League decider against Spartak Moscow and played from the start in a 5-1 win at St Mirren.

Riordan was linked with a move to Leicester, West Brom and Norwich in August but he is determined to prove himself at Parkhead.

He said: "I didn't have a decent chance last year in the team but I'm quite enjoying it this season. I'm getting a lot more time on the pitch now.

"It is frustrating for any player that is not playing every week.

"I was used to it at Hibs but this is a massive club with big games all the time so I'm glad it is going well for me just now.

"I want to be a success, the fans have been good to me.

"You have always got to look at your future if you are not playing as much as you want to, but I'm enjoying it now. I'll just see how it goes along.

"I wanted to come here and play every week but that was hard for the first year, so it has taken time to break in, and hopefully that's the start of it now."

Riordan's limited chances sparked a host of rumours about his relationship with Strachan, but the Edinburgh-born player is satisfied the manager rates him.

"The manager goes for different reasons if he doesn't pick a player, not just me," he said.

"He was playing Aiden (McGeady) and Aiden came out for the Spartak game over there and (Paul) Hartley came in and played left midfield and scored. It just depends how he wants the game to go.

"He says he wants me here and I'm happy with that."

While former Hibs team-mates Garry O'Connor and Scott Brown were involved in Scotland's 1-0 win over France in midweek, Riordan was preparing for tomorrow's Clydesdale Bank Premier League clash with Inverness at Parkhead.

But he does not feel that leaving the Easter Road club harmed his international chances.

He said: "I've just got to try and get playing regularly and score goals and do well and hopefully I'll get the shout for the Scotland team.

"I was playing at Hibs and I scored quite a lot of goals and I still only managed to get one cap."