About Negotiation

[Accyrover]

I have received a offer for one of my strikers.
20yo 5* 36 just! I bought him 2.5 seasons ago as an 18yo. paid 2.8m for him, he's out of contract in a few days and it's 430k to renew with wage demands of 110k.
He's trained really well this season he will hit 40 no problem by the end of next season were I would be hoping to be pushing L6.
I was going to renew but I have just received an incredible offer for him current Mkt value 4.3m, the offer is 7.76m and 16tokens.
Is that what I get cash plus 16 tokens.
I'm really in two minds.
I have two scout strikers, my plan was to keep him and use him as back up as I normally only play 1 ST, if I sell I know it will likely cost me more than 16 tokens to get a higher quality and of his age.
Thoughts?.