The Hungarian international, 29, was a target for the Hoops during the summer as the club looked to strengthen its goalkeeping options. However, no agreement was reached between the clubs, and Celtic instead brought in Sam Johnstone on loan from Wolves.

Johnstone has played twice for Celtic, while Viljami Sinisalo has kept the number one position.

Toth has an extension offer from the EFL Championship club, with Blackburn manager Tony Mowbray hoping to persuade him to stay at Ewood Park.

Journalist Alan Nixon has reported that Toth is not currently willing to sign the proposed agreement.

His current contract expires next summer, meaning Celtic could move for him in January if his position remains unchanged.

The club could also negotiate a pre-contract agreement if Toth is willing to move to Glasgow.

Celtic lost Kasper Schmeichel to retirement at the end of last term, helping Sinisalo, 25, establish himself as the regular starter.

Martin O’Neill could therefore approve another January move for Toth, who was previously considered by the club this time round.