By James Whaling Charlton Athletic have sacked Michael Appleton after the Addicks lost 3-2 to Northampton Town in League One on Tuesday night. In a damning 38-word statement on the club website just half an hour after the full-time whistle, they said: “Charlton Athletic can confirm that Michael Appleton has left the club with immediate effect after being relieved of his role as Head Coach. “The club would like to thank Michael for his efforts during his time in charge.” Appleton had only been in the role for four-and-a-half months having succeeded Dean Holden, who left the club back in Septemb…