Chelsea boss Thomas Tuchel admits his team are in transition.

Tuchel's frustration boiled over after Chelsea's chastening 4-0 pre-season defeat against Arsenal during their tour of America and painted a gloomy picture of their immediate prospects.

A fortnight on, on the eve of the new season and day Chelsea completed the £62m capture of Marc Cucurella from Brighton, though he was notably more relaxed.

Tuchel said: "It was sometimes turbulent and sometimes distracting and not 100 per cent calm.

"What helped was time, being back at Cobham because it calmed everyone down, it's our environment and we know what we are doing now to prepare for a match and the new season. That process has helped everybody to calm down.

"Seeing that we are succeeding in the market also calmed me down. The strength of Chelsea is calmness from inside and also outside and we need to reach that status again."

Tuchel added: "I don't want to limit our expectations right now. At the same time I don't want to put too much pressure on us. We are a team in transition still. For me it is possible in both directions so we should be humble and try hard to be the best version of ourselves."

But will there be pressure from the new owners who fully intend to continue spending?

Tuchel said: "From our owners I feel huge ambition. For everything they want to compete, they will do everything to keep this club a great club, very competitive club at the highest level. They want to reach finals, win titles.

"This is very clear and what we signed up for anyway at Chelsea - nothing has changed, they want it as soon as possible, we want it as soon as possible but right now for this situation, it makes no sense to put this pressure on us.

"They [the owners] have patience, for them it is a long-term project. They want to build a huge club, a huge team and they understand the situation very well. They are in the middle of it so they understand it."

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