George Pell will reportedly take his child sex abuse case to the High Court in a last ditch bid to have his convictions overturned.
Pell had his appeal dismissed last week after he was sentenced to a minimum of three years and eight months in prison.
In December, he was convicted of molesting two choirboys at St Patrick's Cathedral in 1996, when he was the newly-installed Archbishop of Melbourne.
The 78-year-old, who is the most senior Catholic representative to be found guilty of child sex abuse, failed to overturn his conviction in the Court of Appeal on Wednesday.
George Pell will reportedly take his child sex abuse case to the High Court in a last ditch bid to have his convictions overturned
But his barrister Bret Walker, SC, believes Pell may have a case to take his appeal to the High Court after Victorian Supreme Court Justice Mark Weinberg questioned the sole surviving victim's credibility.
The case against Pell relied on the testimony and evidence of one 'choirboy', also known as 'Witness J' or simply 'A'.
The other victim died in 2014 without lodging a complaint against Pell. A reported the historic abuse to police in June 2015.
Justice Weinberg questioned this victim's reliability and credibility, suggesting there was a 'significant body of cogent evidence casting serious doubt upon the complainant's account'.
Justice Mark Weinberg (pictured) voted to partly grant Pell's appeal on Wednesday morning
His recommendation was that Pell should be acquitted of all charges.
'Having had regard to the whole of the evidence led at trial and having deliberated long and hard over this matter, I find myself in the position of having a genuine doubt as to the applicant's guilt,'' Justice Weinberg wrote.
But his opinion was outnumbered when Justices Ann Ferguson and Chris Maxwell both ruled to uphold his convictions.
Bret Walker, SC, reportedly has extensive experience in the High Court and is reportedly in the process of finalising Pell's grounds for another appeal.
The Church is yet to respond to the dismissal of Pell's appeal. He was dumped from his position as Vatican treasurer upon conviction but a decision on whether to defrock him was left until after the appeal.
Pell will also be stripped of his companionship of the Order of Australia, which he was presented with in 2005.
George Pell appeared back in his traditional clerical garb after attending his sentence in civilian attire. Pell took notes and listened intently to every detail of his two-day appeal