The gameweeks you need a forward for can heavily dictate which direction you go in when replacing João Pedro. Here are several options to consider, depending on your needs and plans.
The most recent Joao Pedro update indicates he won't return until gameweek 11 at the earliest.
Option 1: Alexander Isak

Ownership: 17.2% Price: £9.1m Gameweeks: 10 onwards
📈 Highest Average Expected Points forward over the remainder of the first half of the season (excluding Haaland)
📈 Highest-Scoring Forward (excluding Haaland)
📈 Highest xG per 90 alongside Barry (excluding Haaland)
⌛ Long term option
🥇Looks the best option for those that can afford him
Option 2: Nicolas Jackson

Ownership: 13.5% Price: £6.8m Gameweeks: 9, 13, 14, 15, 17
🔥 In-form option
⚽ Solid Gameweek 9 option
⌛ Long term option
Option 3: Igor Thiago

Ownership: 9.0% Price: £7.8m Gameweeks: 9, 11, 16, 17, 18
📈 Best Projected Points for Gameweek 9 on the list
📅 Best Fixture Run Across Gameweeks 16, 17 and 19
📈 Strong Underlying Data
🩹Minimal Minutes or Rotation Risk
❌ Gameweeks 12-14 is tough
Option 4: Dominic Calvert-Lewin

Ownership: 21.3% Price: £6.1m Gameweeks: 10, 12, 14, 16, 18
📈 Highest Projected Points in Gameweek 11 and second highest in Gameweek 14 (across all Forwards)
👑 Potential Captaincy Option
⌛ Long term option
Option 5: Kai Havertz

Ownership: 5.6% Price: £7.5m Gameweeks: 10, 11
🔴 Arsenal Differential
📈 Highest Projected Points in Gameweek 11 (across all players)
👑 Potential Captaincy Option
📈 Top-Three FPL Forward in Long-Term Projections if He Starts
🩹 High Rotation Risk
Option 6: Thierno Barry

Ownership: 7.3% Price: £5.6m Gameweeks: 10
📈 5.69 projected points in Gameweek 10
📈 Highest xG per 90 alongside Isak (excluding Haaland)
💰 Price frees up £2.2m
❌Rough long term fixtures and projections
Option 7: Hold

Ownership: 62.4% Price: £7.8m Gameweeks: ?
🔒 Potentially back in three weeks, avoiding the need for a transfer to bring him back in
📈 Highest Average Expected Points forward from gameweek 11 until 18 (excluding Haaland)
📉 Will have multiple price drops