Since Brendan Rodgers resigned as Celtic manager on Monday, several candidates have emerged as the Northern Irishman’s long-term successor.

Celtic moved quickly to appoint former manager Martin O’Neill as interim boss – 20 years after his first stint in charge of the Glasgow club ended.

Sunday’s 3-1 defeat at table-toppers Hearts was Celtic’s second successive Premiership loss, leaving them eight points adrift in second place, while they have won just two of their last seven matches across all competitions.

O’Neill, 73, has played down suggestions he could take up the job on a full-time basis – insisting he is just “keeping the seat warm”.

Several candidates have already started to emerge for the position, including some names that have strong links to Parkhead.

BBC Sport assesses the options and looks at how realistic it could be to appoint one of them.