This is called keeping hope or being very optimistic.

Chelsea were beaten by three goals to one last Wednesday in the quarter final of the Champions League at the Parc des Princes against PSG.
José Mourinho who should faces today the output of an explosive book, still believes!

He says!

We will score more goals than them. We can make the feat of winning the tie.”
“The most important thing is to remain confident. I believe in my players as well. “

“Many people expect our disposal.”

“At kickoff, we will show up with a smile, give everything, do everything.”

“Paris lack a single great player. This is not a problem for them. Me, I’ve got Ramires suspended. Matic and Salah are not qualified…”

“A non-Motta plan? He may evolve where he wants. That’s his problem; his game does not concern us.”