Dublin manager Jim Gavin is facing a defensive selection dilemma this week that one of his predecessors has suggested could keep him awake at night ahead of Sunday's All-Ireland final.
After making two changes prior to the beginning of the second half against Kerry, there is speculation that change is on the horizon when Dublin make public their team, probably on Friday night.
Philly McMahon is the most likely inclusion after replacing Kevin O'Brien at the end of the first quarter. But the biggest call surrounds centre-back Ger Brennan, who was replaced by midfielder Denis Bastick at half-time, with Cian O'Sullivan going to centre-back where he got tighter to Colm Cooper.
It is a dilemma that former Dublin manager Tommy Lyons suggested yesterday could keep Gavin "awake at night" this week.
O'Sullivan was name-checked by Mayo manager James Horan as Dublin's best player, in his consideration, against Kerry.
Bastick has been used as an impact substitute in all of Dublin's games this summer and the management have not deviated away from that. Lyons speculated yesterday that the Leinster champions are likely to persevere with Brennan.
Meanwhile, Cillian O'Connor came through Mayo's weekend camp unscathed and is in line to play a part against Dublin in Sunday's showdown.