La Liga's financial fair play rules are delaying the finalization of Lionel Messi's contract with Barcelona.

Messi is a free agent for the first time in his career after his contract expired on Wednesday. 

"We want him to stay and Leo wants to stay; everything is on track," Joan Laporta told Onda Cero on Thursday.

"We still have the financial fair play [issue] to sort out ... we're in the process of finding the best solution for all parties."