Celtic assistant manager Johan Mjallby hopes
the futures of Joe Ledley and Georgios Samaras
are resolved soon so the club can plan for next season.
"There are offers on the table but it's up to them to obviously come back to us and say want they want, said Mjallby following
the 2-0 win over Hearts
"For us it's going to be a hard situation, them not wanting to be here.
"We can't just let them run down their contract, even if they are terrific players and very important players."
With Celtic top of the Scottish Premiership and widely expected to win the division, Mjallby insists the club "need to look at the future".
"The longer it goes, the more active we need to be to look for replacements," he explained.
"Ideally, you want to start building right now.
"We are in a good position in the league and hopefully we have another qualification campaign for the Champions League next summer.
"We're going to sit down and see where we need to be, which positions we need to be a bit more active in and try to find some bargains or jewels."
Kris Commons fired Celtic in front against Hearts before substitute James Forrest netted a late second.
Highlights - Celtic 2-0 Hearts
And Mjallby felt Forrest's impact had improved the hosts in the second half.
"We showed good patience," added the Swede.
"It was a great spark for us in the second half when James Forrest came on.
"A fit James Forrest you always want to use from the start. You want to play him for 90 minutes all the time.
"But it's been hard to keep him fit this season but hopefully for the rest of the season we're going to see more of James."