I dunno, he seemed to do pretty well coaching the players Overmars signed.
Depends on what you mean by "doing well". Overmars build a side that was compared to the 1995 CL winning side. For example, see the following article. By that measure, ETH failed in Ajax. Winning 3 domestic titles was the bare minimum that everyone expected from that 2017 side. Their goal was to win the CL.
Note: this article is from May 2017, half a year BEFORE they hired ETH. Did ETH really add anything to this? Did these players overachieve under ETH?
Marc Overmars has built the best Ajax team since 1995 - but before it comes to an end he knows they must win
Overmars’ Ajax team won one Champions League and Intercontinental Cup, and lost the Champions League final the following year, before they finally disbanded in 1996 and 1997
https://www.independent.co.uk/sport...ster-united-europa-league-final-a7749571.html
When Marc Overmars returned to Ajax in 2012 he had one goal. He had won the Champions League with Ajax in 1995, but since then the giant club had been dwarfed in the new financial landscape of the game. Overmars was the new technical director and he was desperate to drag his old team back into a European final.
On Wednesday night in Stockholm, Overmars’ ambition will be fulfilled. Ajax will play Manchester United for the Europa League. It is their first European final since they lost the Champions League to Juventus in 1996 in Rome, a game Overmars missed with injury. But for Overmars and the rest of the veterans of that great mid-1990s side, guiding this team back to the top is what it is all about.
“It makes me proud,” Overmars tells The Independent in his office at De Toekmost. “When I started here I wanted to do the same as I did as a player, and reach a final. Now to achieve it this year is fantastic for us.”
Football history does not repeat itself, but it often rhymes, and it does so very clearly in the case of Ajax then and now. The 1995 team, which Overmars played in, was a young side, mostly but not exclusively local, playing adventurous pressing football inspired by the values of Johan Cruyff. All of that is true now, and not by chance either. This team has been drawn up on the lines of the old one and it shows.
22 years on, Overmars is still struck by how his band of “schoolboys” upset the odds and beat reigning champions AC Milan 1-0 in Vienna. He was 22, Edgar Davids was 22, Michael Reiziger was 22, Patrick Kluivert was 18. But they took on the Milan of Franco Baresi, Alessandro Costacurta and the rest and won. This Ajax team is just as young now. And it gives him confidence that they can beat United.
“That is why I feel the comparison to 1995,” Overmars says. “Because we were also schoolboys. We arrived at the final in our tracksuits, we came in and we had our lunch, which was spaghetti, a little soup, and apple pie. And all those [other] clubs who already had labs and everything.” But it was enough.