Steven Spielberg To Direct 'Transformers 4'?

Tyrese Gibbons told MovieWeb, "[If] Michael Bay decides to not come back for Transfomers 4. There is always Steven Spielberg! I am not saying that Steven Spielberg is for a fact going to direct Transfomers 4. But it is a beautiful safety net to know that one of the biggest, most respected directors in the world happens to be an executive producer on Transformers."