Messi had moved on to 699 goals after netting a penalty against Leganes two weeks ago but drew a blank in his last three matches against Sevilla, Athletic Bilbao and Celta Vigo before finally reaching the milestone against Atletico.
When asked how he would solve any issues similar to those appearing at Barca, he added: "I wouldn't tell you, and I would try to solve it naturally in our camp, which is the dressing room or the training session".
Goal, meanwhile, report that Setien - who was handed a two-and-a-half-year contract in January - will inevitably lose his job this summer, unless there is a "significant upswing" in results, with catching Real Madrid or lifting the Champions League the only real routes to earning a stay of the execution.
However, should Barcelona further slip up in the title race during their crunch clash with Atletico on Tuesday, Setien will know that the pressure will be piled on all over again as the team bids to win a third La Liga crown in a row.
Xavi, who made a record 767 appearances for Barcelona across all competitions, has now changed his mind and would return to his old club as the current boss, Setien, could be sacked at the end of the 2019-20 season.
"The biggest hope I have now is to be Barca coach and get Barca back to winning ways", Xavi, who has led Al-Sadd to Qatari Super Cup and Qatar Cup silverware, said via Sport.
There have been reports that Barcelona gaffer Quique Setien is having serious issues with his players at the Camp Nou with Lionel Messi said to be among. And as a effect, our technical staff, who are preparing for it a lot and it makes us really excited. I would like to return at the right moment to start a project from zero. It's clear that after the elections the stage would be set, of course.
'They came for me in January, we were speaking.
Since the resumption of football in Spain after the coronavirus-enforced break, Barca have seen a two-point lead at the top of La Liga turn into a two-point deficit as Real Madrid now lead the way with just six games remaining of the campaign.
Cirque du Soleil cuts 3,500 jobs to avoid bankruptcy
Cirque expects to emerge from the restructuring process as a much leaner entity with about 1,000 employees initially. In May, the Quebec government loaned the struggling Cirque $200 million as it attempted to restructure its finances.