Cullen might have to leave Lowe out
Leinster will need the game-breaking skills of James Lowe to cut through Toulouse in the Champions Cup semi-final.
The problem there is that coach Leo Cullen could yet be backed into a corner when it comes to what he wants to do versus what he has to do.
The sight of the unfortunate Mick Kearney being stretchered from the RDS with what looked like a serious shoulder injury did nothing for Leinster's permutations.
Fellow lock Ross Molony has not played for Leinster for a month and is not guaranteed to be available for Glasgow this week or Toulouse the next week.
This makes Scott Fardy paramount to repel what coach Leo Cullen knows is coming their way.
Then, a tricky foot injury means Nick McCarthy has played just 17 minutes for Leinster since his only start of the season in November.
This is simply not good enough preparation for knockout rugby.
It must be noted how Luke McGrath looked far sharper against Benetton than he did against Edinburgh and even Ulster with Jamison Gibson-Park a worthy back-up.
It could just be that Lowe will be the odd man out again in Europe.