Answer to that depends on if you ask Bloom or one of the potential 'buying' clubs. 3-3.5m plus 10% percentage of any future transfer fee wouldn't be a unreasonable amount, think Blood would want twice that amount though.
Genuinely think it's in the players best interests to stay with us though.
Spurs being genuinely interested is a bit of a surprise, considering their squad and money they have available. Understand fully why the other two would be having a look though.