From reading Kasparov and knowledge from the Tournament Book, and other sources I have to believe that the USSR was considering a match.
But the question would be was Botvinnik ready.
In 1938 the AVRO was to decide the challanger. Keres and Fine took top billing.
At the AVRO Botvinnik lost 1 game to Fine, and a draw.
Two draws vs. Keres.
Botvinnik also lost to Euwe.
But he took Reshevsky with a win and a draw.
At the time, the U.S. was not at war. Germany and Russia were Allies.
Which may explain how Keres ended up playing in the Absolute.
This whole piece of history is a bit fuzzy until more sources become available.
IN 1941:
Absolute Botvinnik ahead of Keres.
Mar Del Plata Stahlberg edging out Najdorf, and Eliskases
Buenes Aires Stahlberg and Najdorf tied for first
Groningen Salo Landau
St. Louis Open Reuben Fine
Marshall Chess Club Championship Fine
Munich Stoltz ahead of lundin and Alekhine.
Matches:
Euwe defeated Bogoljubov 6.5-3.5
Reshevsky defeated Horowitz 9.5 50 6.5 in NYC
So it appears that Fine was quite active.