Frederico Rodrigues Santos
Amid links with Manchester United, midfielder Fred said a decision on his future would have to wait.
While happy at Shakhtar Donetsk, Fred wants to challenge himself elsewhere, having been linked with Manchester United and Manchester City.
Brazil midfielder Fred will join either Manchester City or Manchester United in July, believes Shakhtar Donetsk's chief executive.
Brazil coach Tite has confirmed Shakhtar Donetsk midfielder Fred is on the radar of Manchester City.
Manchester City are reportedly interested in Fred and the Brazil international is eager for a call from Pep Guardiola.
FIFA has ruled that the doping ban for Shakhtar Donetsk and Brazil midfielder Fred should be extended to encompass all competitions.
Brazil and Shakhtar Donetsk midfielder Fred cannot play in CONMEBOL-sanctioned competitions until June next year under a doping ban.
Shakhtar Donetsk did nothing wrong by playing Fred against Fenerbahce, according to coach Mircea Lucescu.
Shakhtar Donetsk will face no sanctions from UEFA after Fenerbahce's appeal against the Ukrainian side fielding Fred was rejected.
The Brazilian Football Confederation (CBF) confirmed midfielder Fred's positive drug test on Friday.