Cattermole isn't prepared to continue his Sunderland career in League One and the signings of midfield pair Dylan McGeough and Luke O'Nien - as well as the emergence of 16-year-old Bali Mumba - suggests the 30-year-old isn't in Jack Ross' plans.
Hull City are known to have taken some interest in Cattermole over the past week and both clubs have reportedly been in discussions, however the former Middlesbrough man's Premier League wages are proving an issue for Hull, with Cattermole earning around £40k a week with us.
Whether they will be able to negotiate his wages is unknown, but the club will have to wrap it up pretty soon if we are to shift him off the books before transfer deadline day on Thursday.
While Cattermole is on his way out, there is still talk of Sunderland looking at 21-year-old Greg Docherty, who Ross was keen to bring to the Stadium of Light earlier in this summer but failed to agree a fail for his services. If Sunderland are to sign Docherty they will have to pay £675,000, as well as fight off other clubs such as Burton Albion and, more pressingly, Shrewsbury, for his signature.
Sunderland's midfield was a little light weight, particularly in the first half, against Charlton until Lynden Gooch was moved back to help - would Docherty be much help? At around 5ft 9, he wouldn't add much height, but described as anything but lightweight by former manager Martin Canning;
“Greg’s fitness levels are ridiculous. There is not one ounce of fat on him. He’s got muscles on top of muscles – he’s like Hercules."
I imagine whatever happens with Cattermole may help Ross decide whether a new midfielder is needed. However, whether there is much in this Docherty link - or be it a fleeting mention - remains to be seen. It has been reported he is set to join Shrewsbury Town this evening too, so who knows.