Arsenal star Tomas Rosicky has revealed he will undergo further tests on a troublesome groin injury.
The Czech Republic international missed the Carling Cup final defeat to Chelsea partially as a result of the blow, and was also absent from Wednesday's FA Cup replay with Blackburn due to concerns over his fitness.
The Gunners play Reading at home in the Premiership on Saturday and Rosicky has revealed his participation hinges on the result of further tests on his groin.
"The suspicion of an injury near the groin has been confirmed," Rosicky told his official website.
"I will undergo a few days physiotherapy and in the end of the week will undergo another investigation which will reveal more."