I'm not sure about this. A lot of people are wanting to blame the board or Walsh for not identifying a striker to sign yet Koeman said he knew who he wanted and if he couldn't get any of them then he would make do with what he had.
Also looking at the signings made since he got here, Schniederlin, Martina, Stekelenberg and Klaassen at least are all obviously "Koeman players" so he gets involved more than some people would suggest.
All of them have dropped the ball here I reckon.
You're on to something there. Now Koeman and Walsh naturally will have many discussions before signing a player, however there will be signings wanted by Walsh and signings wanted by Koeman.
Purely speculative but I wager the Walsh 'type' signings as Gueye, DCL, Lookman, Pickford, Keane and Sandro.
Koeman - Williams, Stek, Bolasie, Schneiderlin, Klaassen, Martina.
Then there are those that you could call to be joint ie Rooney, Sigurdsson, Vlasic plus others.
As far as transfers go I have more faith in Walsh and his type of signings than ones you can tell are definitely Koeman's. There's got to be a reason why we've yet again failed to add key targets and panic late in the window and perhaps it is down to disagreements on transfers.
Again it's purely a theory, maybe that's why the team doesn't feel right because its made up of two peoples ideas. If we are insisting on having a DOF let Walsh do the majority of transfers unless Koeman really wants a player. Otherwise I have no idea why Walsh was brought in.