Of course it is.It's not equally both parties responsibility to come to agreement.
Mo has options, if he knocks in 45 goals this season which is certainly on and has 1 year left there will be people offering 400k a week.
We dont have the same scope imo to just lose him on a price we can get out of Newcastle
The onus is on us to put a deal in front of him, he cant sign anything until he has one.
Then I'll be saying the onus is on him to sign or reject and not string us along as if he rejects I will be saying sell asap.
I would have an offer in now and if he rejects then january is open no matter how bad that affects us.

One may have the upper hand in the negotiations, but that's a different point.
