To say he has no plan is sensationalist bullshit.
Did he spend £340m in the summer? No, he didn't.
Did he buy in January? No - this says a lot - if he was only in it for short term gains, why didn't he prop up weak areas with panic buys/quick fixes?
Did he and Marcel Brands inherit an ageing, bloated squad full of players that aren't good enough? Yes. A few of these are still in the squad and out on loan.
Does Silva play better football than Allardyce? Yes.
Is Silva's football effective and getting results? Yes and No. At times we look superb, and at other times we are cannon fodder. Its very frustrating, probably no more so than for Silva himself.
Has Silva sorted our defence out? No. I am sure this is part of the plan, he isn't stupid/blind. We need to allow him time to sort this out. If it is still an issue in a years' time at the end of the 2019/20 season, then he will be under big pressure.
Do we still need a centre forward to replace Lukaku? Yes. Again, I am sure he is painfully aware of this. And again, it's not his fault that he inherited the squad that he did.
We all need to get some patience and understand that these things take a few transfer windows to solve. In Marcel and Silva I trust (for the timebeing).