Mayo are going to be "extremely dangerous" going forward in this year's football championship, according to former Kerry captain Darran O'Sullivan.

Speaking to RTÉ Game On, O'Sullivan said he had a "sneaky feeling" that Mayo could beat Dublin in an All-Ireland semi final, provided the seven-in-a-row chasing Dubs navigate this weekend's Leinster final against Kildare.

"I think Mayo would rather play Dublin in a semi final [rather than a final]," the former All-Ireland winning captain said this evening. "They look like they feel they're on the right track... They're coming onto the radar now, it's all positive from a Mayo perspective."

O'Sullivan was speaking after Mayo's dominant second half performance saw them sweep to a 2-14 to 2-08 victory against Galway in yesterday's Connacht SFC decider.

Singling out the performances of Tommy Conroy and Ryan O'Donoghue, he also praised Mayo's directness after half-time and use of Aidan O'Shea to turn the game around.

"For a team that had such a poor first half, they showed character to turn it around," O'Sullivan said.

For Mayo to make it to another All-Ireland decider, it is likely to be familiar foes in their way in the semi final in the form of Dublin, who are red-hot favourites to see off Kildare this weekend in the Leinster final.

Dublin's six-in-a-row success has seen the men from the capital defeat Mayo in the final on three occasions, the most recent being last December.

O'Sullivan added: "Mayo are on an upward curve, quietly going about their business and getting better and better with every game.

"I've a sneaky feeling for a Mayo win in the semi-final [if Dublin win the Leinster final]."