Celtic have agreed a fee with Kilmarnock to get Greg Taylor that was left-back, according to Sky sources.
Taylor has had his health care as all parties attempt to finish a deal ahead of the midnight deadline.
The Scotland global trained with the national team on Monday afternoon before a breakthrough was made between the two clubs.
Taylor is due to make his way from Edinburgh to finalise the transfer.
It is understood Celtic defenders Calvin Miller and Jack Hendry will not proceed to Kilmarnock.
League One Bolton had made a enquiry for Hendry but could not find a deal.