Former Arsenal star Bacary Sagna is convinced Kieran Tierney can become one of the world's best IF he keeps the faith.
The former Celtic star remains a key man at the Emirates, however, his game time has been limited this season with Oleksandr Zinchenko establishing himself as the Gunners' first choice at left back. Mikel Arteta remains a huge believer in the £25m star and Sagna is adamant leaving North London is not an option.
Tierney came off the bench in Sunday's 2-0 win over Tottenham but has had to settle for regular game time in the Cup competitions this season. But Sagna is adamant things can turn quickly and believes the 25-year-old must keep striving to improve and opportunities will once again become available.