The 30-year-old made a number of high-profile errors in Liverpool’s opening Premier League games followed by a spell on the sidelines with a hamstring injury.
It led to speculation suggesting Brendan Rodgers could be ready to cash-in on the former Barcelona shot stopper, with the Reds boss reportedly interested in Birmingham City’s Jack Butland.
However, Reina has started Liverpool’s last seven games and kept four clean sheets, and the Reds number one is confident his best years are still ahead of him.
“I’m on the way to my best,” Reina told Liverpool’s website.
“I was a little bit upset with myself [earlier in the season] and it was a time to show a bit of commitment and get a fresh start from zero – and that’s what I’ve tried to do. I feel fresher, I feel lighter and I am ready for more.
“Hopefully [my best years are still ahead of me]. People say goalkeepers reach their best in their 30s, and I am 30 right now, so hopefully my golden days are still waiting for me.”
Reina also praised Liverpool’s decision to award second-choice goalkeeper Brad Jones a new long-term deal after the Australian impressed while deputising for Reina.
“It’s absolutely deserved,” added Reina.
“He’s been great for this football club. Whether he was playing or not, he was always very, very professional and he definitely deserves it. I congratulate him and I am happy for him.
“He was outstanding [when he played]. He was very composed, mature and brave at times. He was a reliable goalkeeper and he is going to be like that for a long time. He is going to keep me on my toes, which is good.”
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