The Argentina international ran riot during El Clasico on Sunday night, scoring two goals against Real Madrid to send his side top of the La Liga table.
And with Messi on a frightening run of form, scoring 11 goals in his last 10 matches, the Osasuna players have told their manager they may need to find a new way to stop the 29-year-old.
Osasuna are currently rooted to the bottom of La Liga and know if they lose to Barca tomorrow, their hopes of staying in the top tier of Spanish football will surely end.
Vasiljevic said, “I’ve already said that we need a plan for Messi and the players told me [that we need to] carry handcuffs and a pistol.”
“He disconnects, but later he plugs [himself] in for 10 minutes and does what he does.”
With Barca hosting Osasuna, their La Liga title challengers Madrid travel to Deportivo la Coruna.