Your player is in negotiation list (but you can't see your players).
He is just an MC (very common position), without special ability and a little old.
So he isn't attractive to other managers. I had much more interest players in nego list and didn't have any offers so I sold them in transfer market.
My guess is that if you 'll not have any offers those 1-3 days of the season, you 'll not have any later, so try to sell him in the market.