Zidane, 46, has signed a three-year contract that will keep the former Los Blancos star at the Bernabeu until June 30, 2022.
Madrid president Florentino Perez has reportedly met with the board and resolved to dismiss Solari, with Zidane set to be his replacement, nine months after he resigned at the end of last season.
"What I think is that this team needs to continue winning but I think it needs a change, a different voice, another methodology", he said at a news conference explaining his resignation a year ago.
Back-to-back defeats to Barcelona in the Copa del Rey and LaLiga effectively ended Madrid's hopes of domestic honours this season, before they were then knocked out of the Champions League after a humbling 4-1 home defeat to Ajax.
The mood in the Los Blancos camp appears to be boring at the moment, with Real having crashed out of both the Copa del Rey and UEFA Champions League in the last week and a half.
Yellow weather warning remains in place for snow and ice in Yorkshire
Westerly winds of 50 to 65km/hr are expected throughout Sunday, with gusts reaching 90 to 110km/hr, strongest in coastal areas. Cloud will thicken from the west later as winds freshen. "We're due further wintry showers in some parts of Ulster".
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We stopped after 50-55 minutes for 20 minutes at Wolverhampton and that was enough to lose the game. We only started again in the last 10 minutes.
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The funds were spent in support of ten or more congressional candidates by a for-profit entity called Brand New Congress, LLC. Dark money refers to political spending where donors are not disclosed and sources of funding are unknown.
He made his decision to re-appoint the Frenchman after his team's Champions League hoped were dealt a huge blow when they were dumped out of the competition by Ajax.
"I am very happy to be back, the most important thing is that".
Solari, a former Real Madrid and Argentina midfielder who took over the reins on November 13, had replaced former Spain manager Lopetegui but failed to bring success to the club. The Wales global fell out of favour with Zidane during the Frenchman's final season in charge, and his return may force Bale to consider his future should he get the impression that he'll once again be on the peripheries of the starting XI.
Solari took over from Lopetegui as an interim coach and eventually was given a full-time job - with a contract until 2021 - after putting the team back on track.
Perez later added: "The best manager in the world has rejoined the club".
The big surprise was that Solari has been offered the chance to remain employed at Real Madrid - if he decides he wants to. "I'm happy to be here and I have to think about Saturday's game".