And the 21-year-old winger is ready for a bust-up with Monaco if they play hardball over his dream move.
Speculation also continues over the futures of midfielder Fabinho and forward Kylian Mbappe - who is said to be wanted by both Arsenal and Real Madrid.
While Ornstein never detailed which Monaco's sales may have tanked Arsenal hopes of signing Lemar, the Ligue 1 champions have already sold Tiemoue Bakayoko to Chelsea, Bernando Silva has joined Man City, while Benjamin Mendy could be on his way to the Sky Blues as well.More news: Ford Motor Company (NYSE:F) Stake Reduced by Barber Financial Group Inc
The France worldwide is interesting both Tottenham Hotspur and Arsenal, French newspaper L'Equipe report - but Monaco are determined not to sell. "I think he will stay, it looks like that, for one more season". People have big imaginations.
And Pires, part of Arsenal's Invincibles squad and an occasional presence at the club's Colney training ground, believes that is the right decision - even if it means Wenger misses out on his top target. What we the club know is that Mbappé is over £100m ($129m) and after that it is free to now imagine what you actually want. Maybe he had too much choice, so in the end people don't move'.
"But we have not made any offer". Asked whether the England global will stay at Arsenal, the French manager said: "Of course, 100 percent I expect Chamberlain to stay".