Tomaszweski says his compatriot should leave the Emirates this summer, and it would be a 'waste of time' if he stayed.
Goalkeeping legend Jan Tomaszweski has hit out at Arsene Wenger for being dishonest in light of Petr Cech's signing for Arsenal, claiming that Wojciech Szczesny was told he would get to play again soon if he worked hard, in a recent interview with Polish newspaper Przeglad Sportowy.
And even if the Colombian is sold and Szczesny retains the spot he had last season, he will be lucky to make 15 appearances a season.
"Wojciech must be devastated," Tomaszewski told Przeglad Sportowy..
"In January I spoke to [Poland manager] Adam Nawalka and he said that Arsene Wenger had told him that if Szczesny worked hard in training he would play again soon.
"It turned out that he didn't tell the truth. I'm sure that when Szczesny said that he was going to stay at Arsenal, he didn't know that Cech was going to come because Wenger didn't tell him about his plans. Szczesny should leave, because it will be waste of time for him, if he stays."
Tomaszewski is a national hero back in Poland, and will be remembered by England fans of a certain age, after he put in a spectacular performance at Wembley in 1973 to earn his country a 1-1 draw and ensure they went to the World Cup finals in Germany the next year - where the Polish number one was named best goalkeeper.
Unsurprisingly, the 67-year-old is concerned about what Cech's arrival could do to Szczesny's ability to perform for Poland.
"This [Petr Cech transfer] is a big problem also for the Polish national team," he added.
"For me Wojciech is still Poland's number one, world class goalkeeper but after Cech's transfer he has no chance to play at Arsenal and for Poland. It could be end of his career in the national team."
Szczesny could end up benefitting from Cech's arrival
Of course, if Szczesny was willing to be second choice goalkeeper for another couple of years or more, he could stand to profit a great deal from working with someone who is arguably one of the all time greatest goalkeepers.
The 25-year-old has already welcomed Cech to the club on his Facebook account, and said just that, as he recognised the chance to work alongside the former Chelsea man.
It could benefit both the Polish national team and Arsenal in the long run, as difficult as that is to see at present.