Possible Clues:

• Bear it in mind that this should come at the end (7)
• Supposed
• One may have it in mind - or should have, at last (7)
• In any event time is needed for consideration
• Excuse, part 3
• Musing, despite the fact that time's short
• Telepath's transmission
• Serious and careful consideration
• Study for all that time
• ... nevertheless needing time for contemplation