The Swans have been a revelation this season, finishing eighth in their first Championship season, and Martinez believes a number of his first-team players are capable of playing in the Premier League.
However, the Spaniard is desperate to keep his star men at the Liberty Stadium and is hoping top-flight clubs will not look to his squad for reinforcements.
"I would expect Premier League clubs to come in for some of my players because I know them and I know how good they are," he told Sky Sports' website.
"Whether things will put clubs off from taking a chance on them is another matter, like Leon Britton's height.
"Some may say he is too small to be involved in the middle of the park, but I would take eight or nine of my squad and put them straight into a Premier League side.
"Obviously, I hope they don't come in for them because I would prefer to keep them here for next season."
Martinez is optimistic he can keep the main foundations of his squad together for next season, and will instead be focusing on strengthening this summer.
He said: "I don't think it will be too difficult to hang on to my players because nine or ten months ago not many people knew their names, but I will continue to search for recruits in case we do lose a few players.
"We lost Lee Trundle last season and he was a big player for us last season, plus Andy Robinson and Paul Anderson left, so we have proved that we can cope with losing players.
"We have improved our squad with every transfer window and that is down to the recruitment system in place here and the hard work by everyone concerned."