More likely a game of chess.
The PAP had given their blessings to LTK in Hougang all these years and there is no reason for them to threaten LTK with a high-powered Minister.
But with CST moving out of Potong Pasir, the PAP is afraid that the normally lethargic LTK suddenly find energy and start to contest in GRC.
So to create uncertainties, move KBH there and give an implicit threat that if LTK moved out into a GRC, then KBH will move in. If LTK loses in the GRC, then he may also find that he is without a constituency.
Will LTK take that risk? LTK has always been a cautious man, adverse to risk. The PAP, if the above strategy is correct, hopes that the implicit threat will make sure he stays in his contained mode.
The question now is, if there is a basis for the above scenario?
LTK, when faced with the implicit threats against JBJ, chose the conservative way in order to protect the party. JBJ was left to fend for himself. He could not.
Now, the presence of KBH is an implied threat. The PAP is therefore counting on his conservative nature to keep him out of a GRC.
Thus based on psychology and past precedent, there is a basis.
But that is different from saying this is the truth. It is only a possibility.