CELTIC returned to pre-season training today to prepare for their first Champions League qualifier, and it won't be long before they know their first opponents (and their second opponents should they get through).

Here are all the details you need to know ahead of the crucial fixtures for Neil Lennon and his men...

READ MORE: Champions League and Europa League draw live: Celtic and Rangers to learn opponents 

When does the draw take place?

The draw will take place in Nyon, Switzerland, tomorrow at 1.30pm UK time. The draw for the second qualifying round will also take place on the same day.

Who are Celtic's potential opponents?

Neil Lennon's men go into the draw as a seeded team, meaning they will avoid potentially difficult ties against the likes of Red Star Belgrade or BATE Borisov.

UEFA have now confirmed the five unseeded teams they could come up against:

Valletta FC (Malta)

FK Sarajevo (Bosnia)

Sutjeska Niksic (Montenegro)

Partizani Tirana (Albania)

Saburtalo Tbilisi (Georgia)

READ MORE: Neil Lennon: Proposed Champions League revamp makes reaching group stages vital for Celtic next season 

When do the qualifiers take place?

Champions League first qualifying round

First leg: 9-10 July 2019.

Second leg: 16-17 July 2019.

Champions League second qualifying round

First leg: 23-24 July 2019.

Second leg: 30-31 July 2019.

Champions League third qualifying round

First leg: 6-7 August 2019.

Second leg: 13 August 2019.

Champions League play-off round

First leg: 20-21 August 2019.

Second leg: 27-28 August 2019.