John Terry is not mad. This is funny to him. He's laughing, actually.
Terry arranged his own substitution in the 26th minute of Chelsea's final match of the season — the final match of Terry's Chelsea career — because he wanted to honor himself by having the fans honor him. Terry was made fun of for this frivolous situation (The other players formed an honor guard as he left the stadium! Really!), but he is not mad at all.