Real Madrid avoided a setback in the La Liga Santander title race as Isco's late victor saw them beat Sporting Gijon 3-2 to maintain their lead atop the table.
"I don't expect fans to be happy with the situation, I am not, the owner is not", Adams said.
Sporting opened the scoring in the 14th minute when Mikel Vesga scooped a pass over Madrid's defence which Duje Cop slammed home, before Isco equalised three minutes later with a brilliant individual goal.
Spanish publication Diario Gol claimed earlier this month that Isco has demanded an £8.5million-a-year salary to remain at Real - a fee Chelsea are prepared to meet.
The Spaniard scored twice in Madrid's 3-2 win at El Molinon and was the man-of-the-match, with his dribbling impossible for the hosts to handle.
But Alvaro Morata headed Madrid level again in the 59th, and the pacesetters kept pushing until Isco scored the victor.
Cristiano Ronaldo became the first player to reach 100 European goals with a brace in Munich, and Zidane added: "We have to be pleased that he says he'll be firing on all cylinders until the end of the season".
Zidane said he wasn't sure if Bale would be ready to play the return leg of the quarterfinal against Bayern next week.
Sporting wing-back Isma Lopez stormed into the Madrid area to drag a shot wide, while a familiar source caused mayhem at the other end with 18 minutes to play.
Betis coach Victor Sanchez has possibly one last chance to save his job as his side entertain Eibar.
However, there was a moment in the second half that only went to further highlight what a talented player he is as he once again led the Gijon defenders on a merry dance on his way to the bow.
Isco's match-winning goal, a stunning 90th minute effort, saw him work an inch of space on the edge of the area before lashing a right-footed effort into the bottom corner, leaving Sporting goalkeeper Ivan Cuellar helpless.
And with time running out, Isco popped up with another fine finish to hand Real all three points.
It was Sporting, however, who moved back in front in the 50th minute, with on-loan Athletic Bilbao midfielder Vesga planting a header high over Casilla that dipped into the net.
Bale had to be replaced for the final half hour of Madrid's 2-1 win in Munich on Wednesday after aggravating an ankle injury that saw him miss almost three months earlier this season.
With two missed penalties against Osasuna, Atletico has missed six shots from the spot this season.