Former Celtic manager Jozef Venglos and midfielder Lubomir Moravcik believe that Slovakia must overcome Scotland on Tuesday night to salvage their World Cup campaign, but insist that they are not favourites in the tie.

Scotland slumped to an unexpected home draw against Lithuania on Saturday night, meaning they slip into second behind England in the table.

Slovakia, meanwhile, have endured a horror start to their World Cup qualification bid, falling 1-0 to England with an agonisingly late Adam Lallana winner before suffering another loss by the same scoreline to Slovenia.

Two famous names from Celtic's past fear that if their native Slovakia cannot take all three points against the Scots then their chances of qualifying may be all but over.

Speaking exclusively to STV's Paul Barnes, former midfield ace Moravcik said: "We don't know really about Scotland. We don't have an image of the game, only highlights.

"I saw highlights against Malta, I saw highlights against Lithuania, but I don't think Slovak people can imagine how strong the Scottish team is.

"It's a team, I think, at a similar level to Slovakia because the players play in England, in the Championship and Premier League with only a few players in Scotland - Hearts, Celtic.

"I think we are not favourites. But we are at home, we need to concentrate and we have to [have] more up front and try to score the first goal because the games depend on the first goal."

Moravcik also explained that the focus is on Slovakia to produce a result after their nightmare start saying: "I think we are on a very hard mission because we lost the first two games.

"I think we need to win, absolutely."

His countryman and former boss Jozef Venglos shared the sentiment that the game will be a tight affair.

"Every game is important for each country," the 80-year-old said. "I think it will be a very good and competitive game.

"The competition is sometimes very mobile, but I think it's normal, good competition and that the game will be very interesting for the supporters and for the other countries [watching]."