richards believes james anderson will be remembered as an england great and a worthy heir to sir ian botham .
four wickets in the game would take him past botham 's national record of 383 test wickets , making anderson the most prolific english bowler in history .
england 's james anderson plays his 100th test match in antigua against the west indies from monday .
anderson needs just three wickets to go level with sir ian botham as england 's top test wicket taker .