Vicente del Bosque's right-hand man confirms the Blaugrana are keeping tabs on Tottenham's playmaker, and have attended Croatia's games at Euro 2012
"He's playing very well; Barcelona has someone watching him," Jimenez told reporters.
With the White Hart Lane club missing out on Champions League football for 2012-13, the Premier League side are expected to struggle to hold onto their star playmaker.
The former Dinamo Zagreb man has impressed for Croatia during Euro 2012, and La Roja's trainer has stated that Blaugrana scouts have been watching him in action.
"He was present at Croatia's game against Italy, but I can not say who he is," he said.
Manchester United is also believed to be interested in signing Modric this summer, while Chelsea pursued the Spurs man in the summer of 2011.
Spurs, meanwhile, are still expected to sign Ajax defender Jan Vertonghen despite Harry Redknapp's departure this week.
Goal.com understands the club's pursuit of the player will continue and will not be affected by the change in management at White Hart Lane.