The 24-year-old former Burnley striker told talkSPORT Drivetime listeners that he was not at all surprised by Saints youngster Luke Shaw's call-up to the World Cup squad.
He went on to claim 18-year-old doesn't know just how good he is.
'No, not at all [surprised],' said Rodriguez. 'I've played with him all season and he has been brilliant throughout.'
'He will cope with the pressure [in Brazil], since I've known him he has taken everything in his stride. He is a nice lad, down to earth and very grounded.
'I think sometimes he doesn't really know how good he is and that's the beauty of it really, because he is an unbelievable player.'
The 18-year-old was arguably the shock inclusion in the World Cup squad as he got the nod over Chelsea left-back and England legend Ashley Cole.
It is also fair to say that the World Cup is unlikely to be the only big event in the promising left-back's summer too.
Earlier today, Manchester Evening News reported story that Shaw's rumoured move to Old Trafford was 95% of the way there.
The loss of Luke Shaw would be a huge blow to Southampton, and he may not be the only one this summer.
A number of reports have suggested that clubs, mainly from the Premier League, are circling their pool of talented youngsters with regards to a making a bid.
Along with Shaw, Southampton may have to replace the likes of Rodriguez, Lallana, Lovren and even manager Mauricio Pochettino this summer if the Premier League big boys are to have their way.
The situation, if Southampton do decide to allow personnel to leave, could lead to an impromptu makeover at the Saints which, in my opinion, would be a great shame after taking the time to build such a talented squad.