Severed all ties means he has no intention of playing for Sderland again and they think the same about him. He's still under contract though
But If he continues with his good form I would imagine the likes of Ipswich Pompey Wigan In our div or even Hull Pboro or bArnsley might make a £300- £500k or so bid in Jan which would be a Nice bonus for sderland.
Whether we would invest in his services long term would probably depend on salary and length of contract as £300- £500k is similar to Basil and Freddie's recent transfer fees so Tone might be tempted
It would be nice if an extra 500 or so fans turned up to watch us as that might fund at least part of the investment