The former Toro Rosso racer was speaking with Spanish radio Cadena Ser, after being revealed as a radio co-commentator for the 2012 season with Britain's BBC.
"I am talking to a top team and there have been several meetings," he said.
"Everybody was caught out with not enough time to think of everything, so I was left without a seat."
It is believed Alguersuari, 21, received a call from McLaren in January, enquiring about his services as a potential test driver.
The driver was asked about the rumour and he replied: "The person who has said it (the top team) is McLaren is you.
"There are several possibilities that are being talked about. For now I'm with the BBC as a commentator and I don't know how it's going to go watching the races, because I want to get back to racing."