My young son is stuck playing a 4th-level rogue when he really wants to play a druid. He inherited the character from me when he joined the game and the GM is saying he can't swap characters1 (the same GM who said my cleric can't use a sword because they couldn't in original D&D).
Are there any good reasons why he would be unable to take druid levels from now on, according to the rules as written? Are there any features of the 2 classes that would just clash so badly as to make the character virtually unplayable?
Stats: Str: 10, Dex: 15, Con: 15, Int: 12, Wis:9
1 The DM ruled that he could swap, but would need to come in as level 1, which is really hard in an adventure written for level 4 players.