No more damaging than any of the legions of crap that came in before those two.
You bring up Klassen and Siggy as examples of returns lol lol
Sandro, Williams, Bolasie and I could go on.
Lookman wanted gone during Koeman's time. Sam definitely helped push Vlasic out the door though.
There's nothing redeeming about Koeman's time here. He was here longer and did far more long term damage than Sam. I mean ffs he's the manager who forced our hand into bringing Allardyce here.
You have different memories of that first season of Koeman than I do. That Moonfaced bell end was playing Tom Cleverley on the wing ffs and telling Lukaku to move to a bigger club. We went through some poor patches and a lot of folk were not convinced even though he somehow managed 7th.
I'm not having this wham that Alllardyce with his 2 signings and 6 months on the job did more damage than Koeman in a year and a half with 100s of millions pissed down the drain.
Absolute nonsense.