Ten Hag was tasked with bedding in additional than a dozen new signings earlier than this season, having misplaced a number of key gamers in the summertime.
Florian Wirtz joined Liverpool for a charge rising to £116m, Jeremie Frimpong additionally moved to the Reds for £29.5m and Granit Xhaka signed for Sunderland for £13m.
Defender Jonathan Tah joined Bayern Munich on a free switch, winger Amine Adli moved to Bournemouth in a deal value as much as £25.1m, whereas goalkeeper Lukas Hradecky joined Monaco.
The three most costly signings in Leverkusen’s historical past – Malik Tillman from PSV Eindhoven, Jarell Quansah from Liverpool and Eliesse Ben Seghir from Monaco – all arrived this summer season for a complete of £88.4m (102m euros) plus add-ons.
“This determination was not a straightforward one for us,” added Rolfes.
“We firmly imagine within the high quality of our workforce and can now do every part we are able to to take the following steps in our improvement with a brand new set-up.”
The membership didn’t title a substitute for Ten Hag, saying the “coaching work could be taken over by the assistant teaching workers in the intervening time”.
“We stay dedicated to attaining our objectives for the season – and to do this, we’d like the very best situations in any respect ranges and throughout your complete first workforce,” added Carro.
“Now it is a matter of totally implementing and utilising these situations once more.”
Leverkusen, final season’s Bundesliga runners-up, are within the Champions League this marketing campaign – with Manchester Metropolis on 25 November and Newcastle on 10 December amongst their opponents.
Their first sport again after the worldwide break is at residence to Eintracht Frankfurt on 12 September (19:30 BST kick-off), a match you’ll be able to watch stay on the BBC Sport web site, app & BBC iPlayer.
