"We have won enjoyed great victories together and I will always keep those memories with me".
Henry was youth player with the club and scored seven goals in the 1997-8 Champions League as another talented Monaco team, this one coached by Arsene Wenger, reached the semi-finals, where they lost to Juventus.
"I want to thank Leonardo with deepest respect for all the work he has done", Vasilyev's said.
It is thought the 41-year-old was offered the vacant Aston Villa job on Wednesday, but turned it down after being approached by former club Monaco.
"His time here will remain as one of the most attractive pages in the history of the club".
Rumours are rife that Monaco are on the cusp of sacking their manager Leonardo Jardim following a wretched start to the new season.
Michael Now Major Hurricane
Kay Ivey declared a state of emergency for her state Tuesday because of expected wide-spread power outages and wind damage. Forecasters say rainfall in Georgia is expected to range from 3-5 inches; with locally higher amounts of up to 7 inches.
China defies Trump tariffs, trade surplus soars
President Trump added he could do a lot more if he wanted to, but said he would prefer Beijing come to the negotiating table. Trump said the Chinese want to negotiate but he does not believe they are ready and he told them so.