While Bayern are said to be trying to tie down Kroos to a new deal at the Allianz Arena, the player himself has stated that he is keeping his options open.
"I am unable to rule anything out," Kroos told kicker-Sportmagazin.
"I am under contract with Bayern Munich. Actually there are yet no further [contract] talks scheduled. I will therefore fully focus on the second half of the season.
"There are worse situations in life. I play for a top club, and under a top coach. I am pleased, and sometime in the future a decision will be made."
The 24-year-old has 18 months remaining on his current deal at Bayern.