While Frederick and his reinforcements were on their way back to Pavia to join the main imperial force, the Lombard League placed about 3,500 men near the west bank of the Olona.
Sellal kui Friedrich ja tema abiväed olid teel tagasi Paviasse, et liituda keiserliku põhiväega, paigutas Lombardia Liiga umbes 3500 meest Olona jõe läänekalda lähedale.