Former Arsenal goalkeeper John Lukic says he has mixed feelings over Jens Lehmann's return to the club.
He can see clear pros and cons to the decision to bring Lehmann out of retirement.
Lukic told the Sunday Mirror: "The pros are simple. Jens was a very good goalie. He has a wealth of experience and won a load of trophies.
"He also has a big personality that might perhaps be needed in the dressing room for the run-in to the season.
"The cons are that to be a top-level goalie you have to be training every day, seeing balls travelling at high speed and keeping your hands and eyes sharp.
"And it's also about being up to speed with your decision-making. If you need time to think, decide, then act or it'll be too late. The ball will be in your net."
Lukic added: "Picking Jens for a Premier League game would be a massive risk.
"Imagine a goalie who's been sidelined for eight months with injury.
"Would you pick him after one comeback game in the reserves? I think not.
"Jens is almost 42, he hasn't played for eight months.
"I really don't know how he can be expected to step straight back in - and especially at the business end of the season."
Lukic went on: "Arsenal have just eight League games left, including crucial showdowns with Manchester United and Tottenham.
"It's a huge ask to expect Jens to step in now."
