Rovers brought in Grzegorz Sandomierski, Nuno Henrique and Diogo Rosado on the final day of the transfer window, and Kean credited the club's global advisor Shebby Singh with identifying the players.
"I've not seen them play live. They're in the club now and we can have a real look at them," said Kean.
"These players have been identified by Shebby and he's been very excited about the technical abilities of these players. You can't have too many good players.
"We feel as though we can improve any player that comes to the club and also integrate them as quickly as possible. If they show the signs that they can compete straight away, they'll get thrown in."
Blackburn, who currently sit second in the Championship table, face Bristol City after the international break.