That is a pretty tough spot. Feels like pockets 4’s.
Not too many flushes he could have here. He should have raised KQ clubs. Maybe K9, 97, 76? Still, not too likely. Cut-off is a good place to raise those types of hands.
K10 is possibly, but only one combo of K10 suited (hearts). K8 and K4 is a pretty ambitious limp call. I suppose he could have limp called 88, but I think most players would have raised that and TT.
There are players at 2/5 that I would call this bet, but not many. Most players aren’t capable of making that bluff. I suppose there an outside chance he’s trying to represent clubs and push you off of AK or another big hand.
I probably find a fold here (I hope), but I’m not happy about it at all. Very curious as to what happened.