Like all teams in top-flight football, Spurs need to keep players that can be called upon in times of crisis - for example suspensions, injuries or international call-ups ( even though the last one is highly unlikely as we never play an EPL game as the same time as an International fixture ) THudd is just the kind of player that we can call in these such situations.
Bale? ......well... I'm not too sure about him. There is no doubting he is a talented player but not quite the same as when we signed him from Southampton, so my verdict is out on him staying.
JJ? ... Again like THudd, JJ can be useful as a backup or utility player so keep him.
Bent? Keep him if he wants to stay, but once Defoe recovers from injury, he may think his playing days are numbered at WHL!