Erik ten Hag's brief is clear. Make Manchester United the force they used to be once more.
There will, of course, be a myriad of side objectives as well. Creating an attractive and exciting style of play, developing youngsters and promoting them into the first team, significantly improving recruitment, changing the atmosphere around Old Trafford and so on. But what will really determine whether Ten Hag's time at United is a success or not is whether the club becomes competitive again and starts picking up silverware.
That task is going to be incredibly hard as it is and it's just got harder thanks to Jurgen Klopp committing his future to Liverpool. A whole lot harder.