The Ghana international travelled to Athens to watch Panathinaikos's 2-0 victory over PAOK Salonika on Sunday, and gave interviews to local media ahead of his move.
He will sign a two-year contract worth €2m (£1.45m) according to the Daily Mail.
Essien played for Chelsea between 2005 and 2014, before joining Real Madrid and AC Milan.
| Team | P | W | D | L | F | A | GD | PTS | |
| 1 | Olympiacos | 18 | 15 | 3 | 0 | 45 | 7 | 38 | 48 |
| 2 | AEK AthensAEK Athens | 18 | 11 | 4 | 3 | 30 | 19 | 11 | 37 |
| 3 | PAOKPAOK | 18 | 10 | 6 | 2 | 32 | 15 | 17 | 36 |
| 4 | Aris ThessalonikiAris | 18 | 11 | 3 | 4 | 23 | 11 | 12 | 36 |
| 5 | PanathinaikosPanathinaikos | 18 | 9 | 4 | 5 | 20 | 12 | 8 | 31 |
| 6 | Asteras TripolisAsteras | 18 | 7 | 6 | 5 | 18 | 19 | -1 | 27 |
| 7 | Volos | 18 | 5 | 8 | 5 | 20 | 25 | -5 | 23 |
| 8 | AtromitosAtromitos | 18 | 5 | 6 | 7 | 17 | 24 | -7 | 21 |
| 9 | OFI CreteOFI Crete | 18 | 5 | 4 | 9 | 18 | 28 | -10 | 19 |
| 10 | Apollon Smirnis | 17 | 5 | 3 | 9 | 18 | 22 | -4 | 18 |
| 11 | PAS GianninaPAS Giannina | 18 | 3 | 6 | 9 | 16 | 22 | -6 | 15 |
| 12 | PanetolikosPanetolikos | 18 | 2 | 6 | 10 | 9 | 22 | -13 | 12 |
| 13 | AEL LarissaLarissa | 17 | 1 | 5 | 11 | 9 | 28 | -19 | 8 |
| 14 | LamiaLamia | 16 | 1 | 4 | 11 | 9 | 30 | -21 | 7 |
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